Folder Error with Android Nextcloud Client

Hi everyone,

I’m experiencing issues when trying to upload photos or videos using the Android Nextcloud client.

When I navigate to an existing folder and select files to upload, I receive an error message saying “Ordnerfehler” (I assume this is the English equivalent of “Folder error”).

Here’s the log entry from Nextcloud:

e/dav/lib/DAV/Server.php","line":472,"function":"emit","class":"Sabre\\DAV\\Server","type":"->","args":["method:HEAD",[{"__class__":"Sabre\\HTTP\\Request"},{"__class__":"Sabre\\HTTP\\Response"}]]},{"file":"/var/www/html/apps/dav/lib/Connector/Sabre/Server.php","line":43,"function":"invokeMethod","class":"Sabre\\DAV\\Server","type":"->","args":[{"__class__":"Sabre\\HTTP\\Request"},{"__class__":"Sabre\\HTTP\\Response"}]},{"file":"/var/www/html/apps/dav/lib/Server.php","line":371,"function":"start","class":"OCA\\DAV\\Connector\\Sabre\\Server","type":"->","args":[]},{"file":"/var/www/html/apps/dav/appinfo/v2/remote.php","line":19,"function":"exec","class":"OCA\\DAV\\Server","type":"->","args":[]},
{"file":"/var/www/html/remote.php","line":146,"args":["/var/www/html/apps/dav/appinfo/v2/remote.php"],"function":"require_once"}],"File":"/var/www/html/apps/dav/lib/Connector/Sabre/Directory.php",
"Line":188,"message":"File with name /Pictures/@Tauchen/Thomas/09.02.25 racha noi could not be located","exception":{},"CustomMessage":"File with name /Pictures/@Tauchen/Thomas/09.02.25 racha noi could not be located"}

Ls from my System:

root@Docker-Server:/data/nextcloud/data/ncloud.data/alex1987/files/Pictures/@Tauchen/Thomas# ls -l
insgesamt 44
drwxr-xr-x 2 www-data www-data 4096  4. Feb 02:11 '01.02.25 Koh He - Racha Yai'
drwxr-xr-x 2 www-data www-data 4096  4. Feb 12:52 '04.02.25 Racha Yai'                                          drwxr-xr-x 2 www-data www-data 4096  8. Feb 15:55 '07.02.25 Peter Senn'
drwxr-xr-x 2 www-data www-data 4096  8. Feb 15:58 '08.02.25 Racha Yai'
drwxr-xr-x 2 www-data www-data 4096 10. Feb 02:33 '09.02.25 Racha Noi'
drwxr-xr-x 2 www-data www-data 4096 21. Jan 14:26 '18.01.25 Doc Mai - Anemone Reef'
drwxr-xr-x 2 www-data www-data 4096 21. Jan 14:24 '21.01.25 Shark Point - King Cruiser'
drwxr-xr-x 2 www-data www-data 4096  4. Feb 02:11 '31.01.25 Koh Doc Mai & Anemone Reef'

I’m sure that this folder does exist. The issue only occurs on Android; everything works fine on Windows. This problem started about a week ago, possibly after an Android app update.

Has anyone encountered this issue or found a solution?

docker exec -ti -u www-data nc-main php occ config:list
{
    "system": {
        "htaccess.RewriteBase": "\/",
        "memcache.local": "\\OC\\Memcache\\APCu",
        "apps_paths": [
            {
                "path": "\/var\/www\/html\/apps",
                "url": "\/apps",
                "writable": false
            },
            {
                "path": "\/var\/www\/html\/custom_apps",
                "url": "\/custom_apps",
                "writable": true
            }
        ],
        "memcache.distributed": "\\OC\\Memcache\\Redis",
        "memcache.locking": "\\OC\\Memcache\\Redis",
        "redis": {
            "host": "***REMOVED SENSITIVE VALUE***",
            "password": "***REMOVED SENSITIVE VALUE***",
            "port": 6379
        },
        "upgrade.disable-web": true,
        "instanceid": "***REMOVED SENSITIVE VALUE***",
        "passwordsalt": "***REMOVED SENSITIVE VALUE***",
        "secret": "***REMOVED SENSITIVE VALUE***",
        "trusted_domains": [
            "***REMOVED SENSITIVE VALUE***",
            "10.0.0.10:8090"
        ],
        "datadirectory": "***REMOVED SENSITIVE VALUE***",
        "dbtype": "mysql",
        "version": "30.0.5.1",
        "overwrite.cli.url": "https:\/\/cloud2.underwater-way.com\/",
        "overwriteprotocol": "https",
        "dbname": "***REMOVED SENSITIVE VALUE***",
        "dbhost": "***REMOVED SENSITIVE VALUE***",
        "dbport": "",
        "dbtableprefix": "oc_",
        "mysql.utf8mb4": true,
        "dbuser": "***REMOVED SENSITIVE VALUE***",
        "dbpassword": "***REMOVED SENSITIVE VALUE***",
        "installed": true,
        "maintenance": false,
        "default_phone_region": "FL",
        "maintenance_window_start": 3,
        "memories.exiftool": "\/var\/www\/html\/custom_apps\/memories\/bin-ext\/exiftool-amd64-glibc",
        "memories.vod.path": "\/var\/www\/html\/custom_apps\/memories\/bin-ext\/go-vod-amd64",
        "memories.vod.ffmpeg": "\/usr\/bin\/ffmpeg",
        "memories.vod.ffprobe": "\/usr\/bin\/ffprobe",
        "loglevel": 0,
        "customclient_ios_appid": "",
        "simpleSignUpLink.shown": false,
        "enabledPreviewProviders": [
            "OC\\Preview\\BMP",
            "OC\\Preview\\GIF",
            "OC\\Preview\\JPEG",
            "OC\\Preview\\Krita",                                   "OC\\Preview\\MarkDown",
            "OC\\Preview\\MP3",
            "OC\\Preview\\OpenDocument",
            "OC\\Preview\\PNG",
            "OC\\Preview\\TXT",
            "OC\\Preview\\XBitmap",
            "OC\\Preview\\Movie",
            "OC\\Preview\\PDF",
            "OC\\Preview\\Image",
            "OC\\Preview\\HEIC",
            "OC\\Preview\\TIFF"
        ],
        "data-fingerprint": "e9d2014870a03e31c2d411de0991e274",
        "preview_max_x": 1024,
        "preview_max_y": 1024,
        "memories.db.triggers.fcu": true,
        "forbidden_filename_basenames": [
            "con",
            "prn",
            "aux",
            "nul",
            "com0",
            "com1",
            "com2",
            "com3",
            "com4",
            "com5",
            "com6",
            "com7",
            "com8",
            "com9",
            "com\u00b9",
            "com\u00b2",
            "com\u00b3",                                            "lpt0",
            "lpt1",
            "lpt2",
            "lpt3",
            "lpt4",
            "lpt5",
            "lpt6",
            "lpt7",
            "lpt8",
            "lpt9",
            "lpt\u00b9",
            "lpt\u00b2",
            "lpt\u00b3"
        ],
        "forbidden_filename_characters": [
            "<",
            ">",
            ":",
            "\"",
            "|",
            "?",
            "*",
            "\\",
            "\/"
        ],
        "forbidden_filename_extensions": [
            " ",
            ".",
            ".filepart",
            ".part"
        ]
    },
    "apps": {
        "activity": {
            "enabled": "yes",
            "installed_version": "3.0.0",
            "types": "filesystem"
        },                                                      "app_api": {
            "enabled": "yes",
            "installed_version": "4.0.5",
            "types": ""
        },
        "appointments": {
            "enabled": "no",
            "hk": "9720ff40478ad1fac53dde4c6109d866b401cc8b40645df62312f45881ec3cf4",
            "installed_version": "1.15.3",
            "tiv": "ed6a204367617b5333735fd0c9174a34",
            "types": "dav"
        },
        "backgroundjob": {
            "lastjob": "59006"
        },
        "bruteforcesettings": {
            "enabled": "yes",
            "installed_version": "3.0.0",
            "types": ""
        },
        "calendar": {
            "enabled": "yes",
            "installed_version": "5.0.9",
            "types": ""
        },
        "camerarawpreviews": {
            "enabled": "no",
            "installed_version": "0.8.1",
            "types": "filesystem"
        },
        "cfg_share_links": {
            "enabled": "no",
            "installed_version": "3.0.2",
            "types": ""
        },
        "circles": {
            "enabled": "yes",
            "installed_version": "30.0.0",
            "loopback_tmp_path": "\/",
            "loopback_tmp_scheme": "https",
            "maintenance_run": "0",
            "maintenance_update": "{\"3\":1738582800,\"2\":1738583400,\"1\":1738583400}",
            "migration_22": "1",
            "migration_run": "0",
            "types": "filesystem,dav"
        },
        "cloud_federation_api": {                                   "enabled": "yes",
            "installed_version": "1.13.0",
            "types": "filesystem"
        },
        "comments": {
            "enabled": "yes",
            "installed_version": "1.20.1",
            "types": "logging"
        },
        "contacts": {                                               "enabled": "yes",                                       "installed_version": "6.1.3",                           "types": "dav"
        },                                                      "contactsinteraction": {                                    "enabled": "yes",                                       "installed_version": "1.11.0",
            "types": "dav"
        },
        "core": {                                                   "backgroundjobs_mode": "cron",                          "emailTestSuccessful": "1",                             "files_metadata_installed": "1",
            "installedat": "1669534751.1058",                       "lastcron": 1738583400,                                 "lastupdateResult": "[]",                               "lastupdatedat": 1738662776,
            "metadataGenerationDone": true,
            "moveavatarsdone": "yes",
            "previewsCleanedUp": "1",
            "public_files": "files_sharing\/public.php",
            "public_webdav": "dav\/appinfo\/v1\/publicwebdav.php",
            "vendor": "nextcloud",
            "files_metadata": {
                "photos-original_date_time": {
                    "value": null,
                    "type": "int",
                    "etag": "",
                    "indexed": true,
                    "editPermission": 0
                },
                "photos-exif": {
                    "value": null,                                          "type": "array",
                    "etag": "",
                    "indexed": false,
                    "editPermission": 0
                },
                "photos-ifd0": {
                    "value": null,
                    "type": "array",
                    "etag": "",
                    "indexed": false,
                    "editPermission": 0
                },
                "photos-gps": {
                    "value": null,
                    "type": "array",
                    "etag": "",
                    "indexed": false,
                    "editPermission": 0
                },
                "photos-size": {
                    "value": null,
                    "type": "array",
                    "etag": "",
                    "indexed": false,
                    "editPermission": 0
                },
                "photos-place": {
                    "value": null,
                    "type": "string",
                    "etag": "",
                    "indexed": true,
                    "editPermission": 0
                },
                "blurhash": {
                    "value": null,
                    "type": "string",
                    "etag": "9941df7e03f3aac27e03ee55e37a2d5d",
                    "indexed": false,
                    "editPermission": 0
                }
            },
            "oc.integritycheck.checker": {                              "core": {
                    "INVALID_HASH": {
                        ".htaccess": {                                              "expected": "316da2ff481ffed7027c482bd39f3abdcb63adf6e2b1530de3f84647eee2273c232fc5f2e96fb499c18cd95bc09111fe7410d31c5c5b635805bb53f42d0fa263",
                            "current": "c63cb9199a2611b7187567a7e4583bfe897ebc0e78bad91ef2b5f866357078113538e96de12b205ced9274a93e3670706655480f701614566180f73fa5ccc906"
                        },
                        ".user.ini": {
                            "expected": "eaf886ee0d71dbfe3e3585b5c2e40f36ed61bedaf6dadd20295f39a5fa24f40d7df948ff4dc2d481c8e435769ac7c12b115834b34cfbd1419fecc8511310eedb",
                            "current": "cb4e63c44c43eadb3296e4077086c3c69fb0d8fa0ac6f2e322e4b624050e1e10b3c0be38aaefcb37639a476a4a3f384e80f2ae3f9cf3c0836e490d30780dc1cc"
                        }
                    }
                }
            }
        },
        "dashboard": {
            "enabled": "yes",
            "installed_version": "7.10.0",
            "types": ""
        },
        "dav": {
            "buildCalendarReminderIndex": "yes",
            "buildCalendarSearchIndex": "yes",
            "chunks_migrated": "1",
            "enabled": "yes",
            "installed_version": "1.31.1",
            "regeneratedBirthdayCalendarsForYearFix": "yes",
            "types": "filesystem"
        },
        "federatedfilesharing": {
            "enabled": "yes",
            "installed_version": "1.20.0",
            "types": ""
        },
        "federation": {
            "enabled": "yes",
            "installed_version": "1.20.0",
            "types": "authentication"
        },
        "files": {
            "enabled": "yes",
            "installed_version": "2.2.0",
            "mimetype_version": "30.0.5.1",
            "types": "filesystem",
            "watermark_enabled": "no"
        },
        "files_downloadlimit": {                                    "enabled": "yes",
            "installed_version": "3.0.0",
            "types": ""
        },
        "files_pdfviewer": {
            "enabled": "yes",
            "installed_version": "3.0.0",
            "types": ""
        },
        "files_reminders": {
            "enabled": "yes",
            "installed_version": "1.3.0",
            "types": ""
        },                                                      "files_rightclick": {
            "enabled": "no",
            "installed_version": "1.6.0",
            "types": ""
        },
        "files_sharing": {
            "enabled": "yes",
            "incoming_server2server_group_share_enabled": "yes",
            "installed_version": "1.22.0",
            "outgoing_server2server_group_share_enabled": "yes",
            "types": "filesystem"
        },
        "files_trashbin": {
            "enabled": "yes",
            "installed_version": "1.20.1",
            "types": "filesystem,dav"
        },
        "files_versions": {
            "enabled": "yes",                                       "installed_version": "1.23.0",
            "types": "filesystem,dav"
        },
        "firstrunwizard": {
            "enabled": "no",                                        "installed_version": "2.17.0",                          "types": "logging"
        },
        "forms": {
            "enabled": "yes",
            "installed_version": "4.3.6",                           "types": ""
        },
        "gpoddersync": {
            "enabled": "yes",
            "installed_version": "3.11.0",
            "types": ""
        },
        "logreader": {
            "enabled": "yes",
            "installed_version": "3.0.0",
            "levels": "11111",
            "live": "1",
            "shownLevels": "[2,3,4]",
            "types": "logging"
        },
        "lookup_server_connector": {
            "enabled": "yes",
            "installed_version": "1.18.0",
            "types": "authentication"
        },
        "mail": {
            "installed_version": "4.1.2",
            "types": ""
        },
        "maps": {
            "enabled": "no",
            "installed_version": "1.0.2",
            "types": "filesystem"
        },
        "memories": {
            "enabled": "yes",
            "installed_version": "7.4.1",
            "last_index_job_duration": "4.3",
            "last_index_job_start": "1738582500",
            "last_index_job_status": "Indexing completed successfully",
            "last_index_job_status_type": "success",
            "types": ""
        },
        "metadata": {
            "enabled": "yes",
            "installed_version": "0.21.0",
            "types": ""
        },
        "nextcloud_announcements": {
            "enabled": "yes",
            "installed_version": "2.0.0",
            "notification_groups": "[]",
            "pub_date": "Thu, 24 Oct 2019 00:00:00 +0200",
            "types": "logging"
        },
        "notes": {
            "enabled": "yes",
            "installed_version": "4.11.0",
            "types": ""
        },
        "notifications": {
            "enabled": "yes",
            "installed_version": "3.0.0",
            "types": "logging"
        },
        "oauth2": {
            "enabled": "yes",
            "installed_version": "1.18.1",
            "types": "authentication"
        },
        "onlyoffice": {
            "DocumentServerInternalUrl": "",
            "DocumentServerUrl": "https:\/\/oo.underwater-way.com\/",
            "StorageUrl": "",
            "customization_macros": "true",
            "customization_plugins": "true",
            "demo": "{\"available\":true,\"enabled\":false,\"start\":{\"date\":\"2025-01-30 01:54:54.338138\",\"timezone_type\":3,\"timezone\":\"UTC\"}}",
            "enabled": "yes",
            "installed_version": "9.5.0",
            "jwt_header": "",
            "jwt_secret": "***REMOVED SENSITIVE VALUE***",                                                                  "protection": "owner",                                  "settings_error": "",                                   "types": "prevent_group_restriction",                   "verify_peer_off": "false"                          },                                                      "password_policy": {                                        "enabled": "yes",                                       "installed_version": "2.0.0",                           "types": "authentication"                           },                                                      "photos": {                                                 "enabled": "yes",                                       "installed_version": "3.0.2",                           "lastPlaceMappedUser": "alex1987",                      "lastPlaceMappingDone": "true",                         "types": "dav,authentication"                       },                                                      "previewgenerator": {                                       "enabled": "yes",                                       "heightSizes": "64 512 1024",                           "installed_version": "5.7.0",                           "squareSizes": "32 512 1024",                           "types": "filesystem",                                  "widthSizes": "64 256 512"                          },                                                      "privacy": {                                                "enabled": "yes",                                       "installed_version": "2.0.0",                           "readableLocation": "ch",                               "types": ""                                         },                                                      "provisioning_api": {                                       "enabled": "yes",                                       "installed_version": "1.20.0",                          "types": "prevent_group_restriction"                },                                                      "recognize": {                                              "enabled": "no",                                        "installed_version": "3.7.0",                           "types": "filesystem,dav"                           },                                                      "recommendations": {                                        "enabled": "yes",                                       "installed_version": "3.0.0",                           "types": ""                                         },                                                      "related_resources": {                                      "enabled": "yes",                                       "installed_version": "1.5.0",                           "types": ""                                         },                                                      "richdocumentscode": {                                      "enabled": "no"                                     },                                                      "serverinfo": {                                             "cached_count_filecache": "648645",                     "cached_count_storages": "5",                           "enabled": "yes",                                       "installed_version": "2.0.0",                           "types": ""                                         },                                                      "settings": {                                               "enabled": "yes",                                       "installed_version": "1.13.0",                          "types": ""                                         },                                                      "sharebymail": {                                            "enabled": "yes",                                       "installed_version": "1.20.0",                          "types": "filesystem"                               },
        "support": {
            "SwitchUpdaterServerHasRun": "yes",
            "enabled": "yes",
            "installed_version": "2.0.0",
            "types": "session"
        },
        "survey_client": {
            "enabled": "yes",
            "installed_version": "2.0.0",
            "last_report": "{\"id\":\"ocv3zhxbcxm4\",\"items\":[[\"server\",\"version\",\"30.0.5.1\"],[\"server\",\"code\",\"other\"],[\"server\",\"enable_avatars\",\"yes\"],[\"server\",\"enable_previews\",\"yes\"],[\"server\",\"memcache.local\",\"\\\\OC\\\\Memcache\\\\APCu\"],[\"server\",\"memcache.distributed\",\"\\\\OC\\\\Memcache\\\\Redis\"],[\"server\",\"asset-pipeline.enabled\",\"no\"],[\"server\",\"filelocking.enabled\",\"yes\"],[\"server\",\"memcache.locking\",\"\\\\OC\\\\Memcache\\\\Redis\"],[\"server\",\"debug\",\"no\"],[\"server\",\"cron\",\"cron\"],[\"php\",\"version\",\"8.2.27\"],[\"php\",\"memory_limit\",536870912],[\"php\",\"max_execution_time\",0],[\"php\",\"upload_max_filesize\",536870912],[\"database\",\"type\",\"mysql\"],[\"database\",\"version\",\"10.11.10\"],[\"database\",\"size\",407994368],[\"apps\",\"activity\",\"3.0.0\"],[\"apps\",\"app_api\",\"4.0.5\"],[\"apps\",\"appointments\",\"disabled\"],[\"apps\",\"bruteforcesettings\",\"3.0.0\"],[\"apps\",\"calendar\",\"5.0.9\"],[\"apps\",\"camerarawpreviews\",\"disabled\"],[\"apps\",\"cfg_share_links\",\"disabled\"],[\"apps\",\"circles\",\"30.0.0\"],[\"apps\",\"cloud_federation_api\",\"1.13.0\"],[\"apps\",\"comments\",\"1.20.1\"],[\"apps\",\"contacts\",\"6.1.3\"],[\"apps\",\"contactsinteraction\",\"1.11.0\"],[\"apps\",\"dashboard\",\"7.10.0\"],[\"apps\",\"dav\",\"1.31.1\"],[\"apps\",\"federatedfilesharing\",\"1.20.0\"],[\"apps\",\"federation\",\"1.20.0\"],[\"apps\",\"files\",\"2.2.0\"],[\"apps\",\"files_downloadlimit\",\"3.0.0\"],[\"apps\",\"files_pdfviewer\",\"3.0.0\"],[\"apps\",\"files_reminders\",\"1.3.0\"],[\"apps\",\"files_rightclick\",\"disabled\"],[\"apps\",\"files_sharing\",\"1.22.0\"],[\"apps\",\"files_trashbin\",\"1.20.1\"],[\"apps\",\"files_versions\",\"1.23.0\"],[\"apps\",\"firstrunwizard\",\"disabled\"],[\"apps\",\"gpoddersync\",\"disabled\"],[\"apps\",\"logreader\",\"3.0.0\"],[\"apps\",\"lookup_server_connector\",\"1.18.0\"],[\"apps\",\"mail\",\"4.1.2\"],[\"apps\",\"maps\",\"disabled\"],[\"apps\",\"memories\",\"7.4.1\"],[\"apps\",\"nextcloud_announcements\",\"disabled\"],[\"apps\",\"notes\",\"4.11.0\"],[\"apps\",\"notifications\",\"3.0.0\"],[\"apps\",\"oauth2\",\"1.18.1\"],[\"apps\",\"password_policy\",\"2.0.0\"],[\"apps\",\"photos\",\"3.0.2\"],[\"apps\",\"previewgenerator\",\"5.7.0\"],[\"apps\",\"privacy\",\"2.0.0\"],[\"apps\",\"provisioning_api\",\"1.20.0\"],[\"apps\",\"recognize\",\"disabled\"],[\"apps\",\"recommendations\",\"3.0.0\"],[\"apps\",\"related_resources\",\"1.5.0\"],[\"apps\",\"richdocumentscode\",\"disabled\"],[\"apps\",\"serverinfo\",\"2.0.0\"],[\"apps\",\"settings\",\"1.13.0\"],[\"apps\",\"sharebymail\",\"1.20.0\"],[\"apps\",\"support\",\"2.0.0\"],[\"apps\",\"survey_client\",\"2.0.0\"],[\"apps\",\"systemtags\",\"disabled\"],[\"apps\",\"tasks\",\"0.16.1\"],[\"apps\",\"text\",\"4.1.0\"],[\"apps\",\"theming\",\"2.5.0\"],[\"apps\",\"twofactor_backupcodes\",\"1.19.0\"],[\"apps\",\"updatenotification\",\"1.20.0\"],[\"apps\",\"user_status\",\"1.10.0\"],[\"apps\",\"viewer\",\"3.0.0\"],[\"apps\",\"weather_status\",\"1.10.0\"],[\"apps\",\"webhook_listeners\",\"1.1.0-dev\"],[\"apps\",\"workflowengine\",\"2.12.0\"],[\"stats\",\"num_files\",310666],[\"stats\",\"num_users\",2],[\"stats\",\"num_storages\",5],[\"stats\",\"num_storages_local\",3],[\"stats\",\"num_storages_home\",2],[\"stats\",\"num_storages_other\",0],[\"stats\",\"num_comments\",0],[\"stats\",\"num_comment_markers\",0],[\"stats\",\"num_systemtags\",0],[\"stats\",\"num_systemtags_mappings\",0],[\"files_sharing\",\"num_shares\",94],[\"files_sharing\",\"num_shares_user\",0],[\"files_sharing\",\"num_shares_groups\",0],[\"files_sharing\",\"num_shares_link\",94],[\"files_sharing\",\"num_shares_link_no_password\",94],[\"files_sharing\",\"num_fed_shares_sent\",0],[\"files_sharing\",\"num_fed_shares_received\",0],[\"files_sharing\",\"permissions_3_17\",82],[\"files_sharing\",\"permissions_3_31\",12],[\"encryption\",\"enabled\",\"no\"],[\"encryption\",\"default_module\",\"no\"]]}",
            "last_sent": "1737472804",
            "types": ""
        },
        "systemtags": {
            "enabled": "no",
            "installed_version": "1.18.0",
            "types": "logging"
        },
        "tasks": {
            "enabled": "yes",
            "installed_version": "0.16.1",
            "types": ""
        },
        "text": {
            "enabled": "yes",
            "installed_version": "4.1.0",
            "types": "dav"
        },
        "theming": {
            "enabled": "yes",
            "installed_version": "2.5.0",
            "types": "logging"
        },                                                      "twofactor_backupcodes": {
            "enabled": "yes",                                       "installed_version": "1.19.0",
            "types": ""
        },
        "updatenotification": {
            "calendar": "4.7.16",
            "camerarawpreviews": "0.8.1",                           "cfg_share_links": "3.0.2",
            "contacts": "5.5.3",
            "core": "30.0.5.1",
            "enabled": "yes",                                       "forms": "4.3.6",
            "installed_version": "1.20.0",
            "memories": "7.4.1",
            "notes": "4.11.0",
            "previewgenerator": "5.7.0",
            "related_resources": "1.0.4",
            "tasks": "0.16.1",
            "types": "",
            "update_check_errors": "0"
        },
        "user_status": {
            "enabled": "yes",
            "installed_version": "1.10.0",
            "types": ""                                         },
        "viewer": {                                                 "enabled": "yes",
            "installed_version": "3.0.0",
            "types": ""
        },
        "weather_status": {
            "enabled": "no",
            "installed_version": "1.10.0",
            "types": ""
        },
        "webhook_listeners": {
            "enabled": "yes",
            "installed_version": "1.1.0-dev",
            "types": "filesystem"
        },
        "workflowengine": {
            "enabled": "yes",
            "installed_version": "2.12.0",
            "types": "filesystem"
        }
    }
}

Thanks in advance for any help!

Looks like the single quotes are being dropped and the filename is being converted to lowercase. One or the other I could see happening, but that’s really odd that both are happening.

Can you post the full raw log entry?

And does the HTTP log (from the Nextcloud container log or, if you’re using a reverse proxy, there too) have the correct filename in it?

I found out that the issue only occurs with the current beta Android Nextcloud version 3.31.0 RC1. Everything works fine with the current Android client version 3.30.8. I have already created a bug report on GitHub:

I am experiencing the same issue. In my case, duplicate folders are created with lowercase letters. Really crazy!

Android version 3.31.0