Epubviewer :: where to submit issues?

adriansev · January 27, 2026, 9:15am

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The Basics

Nextcloud Server version (e.g., 29.x.x):
- Nextcloud Hub 25 Autumn (32.0.5)
Operating system and version (e.g., Ubuntu 24.04):
- Alma 9
Web server and version (e.g, Apache 2.4.25):
- Apache 2.4.62-7.el9_7.3
Reverse proxy and version _(e.g. nginx 1.27.2)
- not used
PHP version (e.g, 8.3):
- 8.3.30
Is this the first time you’ve seen this error? (Yes / No):
- yes
When did this problem seem to first start?
- not sure
Installation method (e.g. AlO, NCP, Bare Metal/Archive, etc.)
- bare metal
Are you using CloudfIare, mod_security, or similar? (Yes / No)
- no

Summary of the issue you are facing:

i have these errors in logs

{"reqId":"aXhz70h6keOijQbu6RQlAwAAANQ","level":3,"time":"2026-01-27T10:14:39+02:00","remoteAddr":"SANITIZED","user":"SANITIZED","app":"no app in context","method":"PROPFIND","url":"/remote.php/dav/files/omicu/","scriptName":"/remote.php","message":"Uncaught exception","userAgent":"Mozilla/5.0 (Macintosh) mirall/4.0.6 (Nextcloud, macos-24.6.0 ClientArchitecture: x86_64 OsArchitecture: x86_64)","version":"32.0.5.0","clientReqId":"f365ff05-cdce-467a-8da4-8442ffde64e8","exception":{"Exception":"OCA\\DAV\\Exception\\ServerMaintenanceMode","Message":"System is in maintenance mode.","Code":0,"Trace":[{"file":"/var/www/nextcloud/apps/epubviewer/vendor/sabre/event/lib/WildcardEmitterTrait.php","line":89,"function":"checkMaintenanceMode","class":"OCA\\DAV\\Connector\\Sabre\\MaintenancePlugin","type":"->"},{"file":"/var/www/nextcloud/apps/epubviewer/vendor/sabre/dav/lib/DAV/Server.php","line":456,"function":"emit","class":"Sabre\\DAV\\Server","type":"->"},{"file":"/var/www/nextcloud/apps/dav/lib/Connector/Sabre/Server.php","line":211,"function":"invokeMethod","class":"Sabre\\DAV\\Server","type":"->"},{"file":"/var/www/nextcloud/apps/dav/lib/Server.php","line":424,"function":"start","class":"OCA\\DAV\\Connector\\Sabre\\Server","type":"->"},{"file":"/var/www/nextcloud/apps/dav/appinfo/v2/remote.php","line":22,"function":"exec","class":"OCA\\DAV\\Server","type":"->"},{"file":"/var/www/nextcloud/remote.php","line":151,"args":["/var/www/nextcloud/apps/dav/appinfo/v2/remote.php"],"function":"require_once"}],"File":"/var/www/nextcloud/apps/dav/lib/Connector/Sabre/MaintenancePlugin.php","Line":65,"message":"Uncaught exception","exception":{},"CustomMessage":"Uncaught exception"}}
{"reqId":"aXhz80h6keOijQbu6RQlCAAAAMQ","level":3,"time":"2026-01-27T10:14:43+02:00","remoteAddr":"SANITIZED","user":"SANITIZED","app":"no app in context","method":"PROPFIND","url":"/remote.php/dav/files/omicu/","scriptName":"/remote.php","message":"Uncaught exception","userAgent":"Mozilla/5.0 (Macintosh) mirall/4.0.6 (Nextcloud, macos-24.6.0 ClientArchitecture: x86_64 OsArchitecture: x86_64)","version":"32.0.5.0","clientReqId":"9eb17ecc-476b-4942-834d-b3397a0824af","exception":{"Exception":"OCA\\DAV\\Exception\\ServerMaintenanceMode","Message":"System is in maintenance mode.","Code":0,"Trace":[{"file":"/var/www/nextcloud/apps/epubviewer/vendor/sabre/event/lib/WildcardEmitterTrait.php","line":89,"function":"checkMaintenanceMode","class":"OCA\\DAV\\Connector\\Sabre\\MaintenancePlugin","type":"->"},{"file":"/var/www/nextcloud/apps/epubviewer/vendor/sabre/dav/lib/DAV/Server.php","line":456,"function":"emit","class":"Sabre\\DAV\\Server","type":"->"},{"file":"/var/www/nextcloud/apps/dav/lib/Connector/Sabre/Server.php","line":211,"function":"invokeMethod","class":"Sabre\\DAV\\Server","type":"->"},{"file":"/var/www/nextcloud/apps/dav/lib/Server.php","line":424,"function":"start","class":"OCA\\DAV\\Connector\\Sabre\\Server","type":"->"},{"file":"/var/www/nextcloud/apps/dav/appinfo/v2/remote.php","line":22,"function":"exec","class":"OCA\\DAV\\Server","type":"->"},{"file":"/var/www/nextcloud/remote.php","line":151,"args":["/var/www/nextcloud/apps/dav/appinfo/v2/remote.php"],"function":"require_once"}],"File":"/var/www/nextcloud/apps/dav/lib/Connector/Sabre/MaintenancePlugin.php","Line":65,"message":"Uncaught exception","exception":{},"CustomMessage":"Uncaught exception"}}
{"reqId":"aXhz9Uh6keOijQbu6RQlDQAAAMI","level":3,"time":"2026-01-27T10:14:45+02:00","remoteAddr":"SANITIZED","user":"SANITIZED","app":"no app in context","method":"PROPFIND","url":"/remote.php/dav/files/vconstantinescu/","scriptName":"/remote.php","message":"Uncaught exception","userAgent":"Mozilla/5.0 (Windows) mirall/4.0.4 (build 20251215) (Nextcloud, windows-10.0.19045 ClientArchitecture: x86_64 OsArchitecture: x86_64)","version":"32.0.5.0","clientReqId":"06171148-d168-420e-8626-d44bf5470f02","exception":{"Exception":"OCA\\DAV\\Exception\\ServerMaintenanceMode","Message":"System is in maintenance mode.","Code":0,"Trace":[{"file":"/var/www/nextcloud/apps/epubviewer/vendor/sabre/event/lib/WildcardEmitterTrait.php","line":89,"function":"checkMaintenanceMode","class":"OCA\\DAV\\Connector\\Sabre\\MaintenancePlugin","type":"->"},{"file":"/var/www/nextcloud/apps/epubviewer/vendor/sabre/dav/lib/DAV/Server.php","line":456,"function":"emit","class":"Sabre\\DAV\\Server","type":"->"},{"file":"/var/www/nextcloud/apps/dav/lib/Connector/Sabre/Server.php","line":211,"function":"invokeMethod","class":"Sabre\\DAV\\Server","type":"->"},{"file":"/var/www/nextcloud/apps/dav/lib/Server.php","line":424,"function":"start","class":"OCA\\DAV\\Connector\\Sabre\\Server","type":"->"},{"file":"/var/www/nextcloud/apps/dav/appinfo/v2/remote.php","line":22,"function":"exec","class":"OCA\\DAV\\Server","type":"->"},{"file":"/var/www/nextcloud/remote.php","line":151,"args":["/var/www/nextcloud/apps/dav/appinfo/v2/remote.php"],"function":"require_once"}],"File":"/var/www/nextcloud/apps/dav/lib/Connector/Sabre/MaintenancePlugin.php","Line":65,"message":"Uncaught exception","exception":{},"CustomMessage":"Uncaught exception"}}

Steps to replicate it (hint: details matter!):

I do not know

Log entries

see above

Configuration

Nextcloud

The output of occ config:list system or similar is best, but, if not possible, the contents of your config.php file from /path/to/nextcloud is fine (make sure to remove any identifiable information!):

{
    "system": {
        "maintenance": false,
        "installed": true,
        "instanceid": "***REMOVED SENSITIVE VALUE***",
        "passwordsalt": "***REMOVED SENSITIVE VALUE***",
        "secret": "***REMOVED SENSITIVE VALUE***",
        "version": "32.0.5.0",
        "overwrite.cli.url": "https:\/\/isscloud.spacescience.ro",
        "trusted_domains": [
            "localhost",
            "isscloud.spacescience.ro",
            "46.243.114.245"
        ],
        "datadirectory": "***REMOVED SENSITIVE VALUE***",
        "htaccess.RewriteBase": "\/",
        "dbtype": "mysql",
        "dbuser": "***REMOVED SENSITIVE VALUE***",
        "dbpassword": "***REMOVED SENSITIVE VALUE***",
        "dbname": "***REMOVED SENSITIVE VALUE***",
        "dbhost": "***REMOVED SENSITIVE VALUE***",
        "dbport": "",
        "dbtableprefix": "oc_",
        "mysql.utf8mb4": true,
        "default_language": "en",
        "default_locale": "ro",
        "default_phone_region": "RO",
        "default_timezone": "Europe\/Bucharest",
        "mail_domain": "***REMOVED SENSITIVE VALUE***",
        "mail_from_address": "***REMOVED SENSITIVE VALUE***",
        "allow_local_remote_servers": true,
        "trashbin_retention_obligation": "30,90",
        "log_type": "file",
        "logfile": "\/var\/log\/nextcloud.log",
        "logfile_audit": "\/var\/log\/nextcloud_audit.log",
        "loglevel": 3,
        "loglevel_frontend": 2,
        "logtimezone": "Europe\/Bucharest",
        "defaultapp": "dashboard,files",
        "enable_previews": false,
        "maintenance_window_start": 1,
        "memcache.local": "\\OC\\Memcache\\APCu",
        "memcache.distributed": "\\OC\\Memcache\\Redis",
        "memcache.locking": "\\OC\\Memcache\\Redis",
        "redis": {
            "host": "***REMOVED SENSITIVE VALUE***",
            "port": 6379,
            "timeout": 0,
            "read_timeout": 0,
            "user": "",
            "password": "***REMOVED SENSITIVE VALUE***",
            "dbindex": 0
        },
        "sharing.enable_mail_link_password_expiration": false,
        "sharing.mail_link_password_expiration_interval": 3600,
        "tempdirectory": "\/nextcloud\/tmp",
        "updatedirectory": "\/nextcloud\/update",
        "mail_smtpmode": "smtp",
        "mail_smtphost": "***REMOVED SENSITIVE VALUE***",
        "mail_sendmailmode": "smtp",
        "mail_smtpport": "587",
        "mail_smtpauth": 1,
        "mail_smtpname": "***REMOVED SENSITIVE VALUE***",
        "mail_smtppassword": "***REMOVED SENSITIVE VALUE***",
        "app_install_overwrite": [],
        "theme": "",
        "trusted_proxies": "***REMOVED SENSITIVE VALUE***"
    }
}

Apps

The output of occ app:list (if possible).

Enabled:
  - activity: 5.0.0-dev.0
  - admin_audit: 1.22.0
  - announcementbanner: 2.0.0
  - announcementcenter: 7.3.0
  - approval: 2.7.1
  - bookmarks: 16.0.1
  - bruteforcesettings: 5.0.0-dev.0
  - calendar: 6.1.5
  - calendar_resource_management: 0.11.0
  - circles: 32.0.0
  - cloud_federation_api: 1.16.0
  - comments: 1.22.0
  - contacts: 8.3.1
  - contactsinteraction: 1.13.1
  - dashboard: 7.12.0
  - dav: 1.34.2
  - deck: 1.16.3
  - drawio: 3.1.2
  - epubviewer: 1.8.1
  - event_update_notification: 2.8.0
  - external: 7.0.0
  - federatedfilesharing: 1.22.0
  - files: 2.4.0
  - files_accesscontrol: 3.0.2
  - files_archive: 1.2.8
  - files_automatedtagging: 3.0.3
  - files_downloadlimit: 5.0.0-dev.0
  - files_external: 1.24.1
  - files_lock: 32.0.1
  - files_pdfviewer: 5.0.0-dev.0
  - files_reminders: 1.5.0
  - files_sharing: 1.24.1
  - files_trashbin: 1.22.0
  - files_versions: 1.25.0
  - files_zip: 2.2.0
  - firstrunwizard: 5.0.0-dev.0
  - flow_notifications: 3.0.0
  - forms: 5.2.4
  - fulltextsearch: 32.0.0
  - group_default_quota: 0.1.13
  - groupfolders: 20.1.9
  - groupquota: 0.2.3
  - integration_github: 3.2.2
  - integration_gitlab: 4.0.0
  - intros: 1.2.1
  - logcleaner: 1.2.6
  - logreader: 5.0.0-dev.0
  - lookup_server_connector: 1.20.0
  - mail: 5.6.8
  - nextcloud_announcements: 4.0.0-dev.0
  - notes: 4.12.4
  - notifications: 5.0.0-dev.0
  - notify_push: 1.3.0
  - oauth2: 1.20.0
  - ownershiptransfer: 1.3.0
  - password_policy: 4.0.0-dev.0
  - passwords: 2025.12.21
  - photos: 5.0.0-dev.1
  - privacy: 4.0.0-dev.0
  - profile: 1.1.0
  - provisioning_api: 1.22.0
  - quota_warning: 1.23.0
  - recommendations: 5.0.0-dev.0
  - registration: 2.8.0
  - richdocuments: 9.0.2
  - serverinfo: 4.0.0-dev.0
  - settings: 1.15.1
  - sharebymail: 1.22.0
  - sharereview: 2.1.0
  - spreed: 22.0.8
  - support: 4.0.0-dev.0
  - survey_client: 4.0.0-dev.0
  - suspicious_login: 10.0.0-dev.0
  - systemtags: 1.22.0
  - tables: 1.0.3
  - tasks: 0.17.1
  - text: 6.0.1
  - theming: 2.7.0
  - twofactor_backupcodes: 1.21.0
  - twofactor_totp: 14.0.0
  - updatenotification: 1.22.0
  - user_status: 1.12.0
  - user_usage_report: 3.0.0
  - viewer: 5.0.0-dev.0
  - weather_status: 1.12.0
  - webhook_listeners: 1.3.0
  - workflow_script: 3.0.0
  - workflowengine: 2.14.0
Disabled:
  - app_api: 32.0.0 (installed 32.0.0)
  - checksum: 2.0.3 (installed 2.0.3)
  - encryption: 2.20.0
  - federation: 1.22.0 (installed 1.20.0)
  - integration_dropbox: 4.1.0 (installed 4.1.0)
  - integration_mattermost: 2.1.1 (installed 2.1.1)
  - libresign: 12.1.0 (installed 12.1.0)
  - metadata: 0.23.0 (installed 0.23.0)
  - onlyoffice: 9.12.0 (installed 9.12.0)
  - related_resources: 3.0.0-dev.0 (installed 1.5.0)
  - sociallogin: 6.3.0 (installed 6.3.0)
  - twofactor_nextcloud_notification: 6.0.0-dev.0 (installed 6.0.0-dev.0)
  - user_ldap: 1.23.0
  - whiteboard: 1.5.3 (installed 1.5.3)

adriansev · January 27, 2026, 9:16am

and the reason i ask is that the git repository https://github.com/devnoname120/epubviewer lacks Issues category

scubamuc · January 27, 2026, 10:42am

Hey @adriansev welcome back

you could try direct contact devnoname120 (Paul) · GitHub

jtr · January 27, 2026, 4:44pm

For future reference, just check the app page in the app store (Either from within the web UI or by visiting https://apps.nextcloud.com/). There’s always a “Report problem” / etc link for the app in question.

adriansev · January 27, 2026, 8:50pm

For further reference, before writing, make sure that your answer works .. of course i went to “Report problem“, that is a link to the git repository that do not have an “Issue“ category (hence i could not fill a bug/issue report).
Thank you!

awelzel · January 28, 2026, 11:45am

Please contact devnoname120 (Paul) · GitHub via E-Mail and ask wether if he just forgot to enable the issues section for the repository.

adriansev · January 28, 2026, 12:31pm

yup, mail already sent with brief information of the problem and a link to this topic. when i will get an answer i will ask also about the missing Issues category.

bb77 · January 28, 2026, 5:03pm

I would post it in the “Discussions” section. But as always with community FOSS projects, there is no guarantee that anyone will fix issues, support you, or even respond at all.

szaimen · January 28, 2026, 5:04pm

Btw, there is this post by the maintainer: https://github.com/devnoname120/epubviewer/discussions/18

adriansev · January 28, 2026, 6:14pm

Thanks a lot!! This actually solves my issue, as i can just remove this extension given this status.

awelzel · January 29, 2026, 8:03am

It is still supported. The last update was in October 2025 to support Nextcloud 32: 1.8.1 · devnoname120/epubviewer · Discussion #36 · GitHub

system · February 6, 2026, 8:04am

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