Hi there,
Nextcloud version (eg, 12.0.2): 13.0.0
Operating system and version (eg, Ubuntu 17.04): CentOS
Apache or nginx version (eg, Apache 2.4.25): Apache
PHP version (eg, 7.1): 5.6
Until today I get an ERR_EMPTY_RESPONSE error in different browsers (Chrome, Internet Explorer, Edge, …) via the web interface. The nextcloud Windows client is responding via a “no cennection to… connection closed” error message.
I cannot find anything in the nextcloud or nextcloud client logs. I will paste the contents.
The output of your Nextcloud log in Admin > Logging:
{"reqId":"ebGsZRjbNFygmD6AHjiE","level":4,"time":"2018-02-28T08:27:08+00:00","remoteAddr":"193.25.22.47","user":"FDeitelhoff","app":"webdav","method":"GET","url":"\/remote.php\/dav\/files\/FDeitelhoff\/3.%20Publikationen\/8.%20Gastbeitr%C3%A4ge\/2.%20itemis%20AG\/ANTLR4%20im%20Web%20-%20Ein%20Erfahrungsbericht.pdf","message":"Exception: {\"Exception\":\"OCP\\\\Encryption\\\\Exceptions\\\\GenericEncryptionException\",\"Message\":\"Bad Signature\",\"Code\":0,\"Trace\":\"#0 \\\/data\\\/web\\\/1\\\/000\\\/029\\\/466\\\/83503\\\/htdocs\\\/cloud\\\/nextcloud\\\/apps\\\/encryption\\\/lib\\\/Crypto\\\/Crypt.php(465): OCA\\\\Encryption\\\\Crypto\\\\Crypt->checkSignature('klpdhzQ8Rl9vwpR...', '\\\\vB\\\\xBD\\\\xDA\\\\x9A\\\\xB4\\\\xF5\\\\xAD,\\\\xFAH\\\\x181\\\\xF5\\\\x87...', 'ebd15fba4f975a8...')\\n#1 \\\/data\\\/web\\\/1\\\/000\\\/029\\\/466\\\/83503\\\/htdocs\\\/cloud\\\/nextcloud\\\/apps\\\/encryption\\\/lib\\\/Crypto\\\/Encryption.php(380): OCA\\\\Encryption\\\\Crypto\\\\Crypt->symmetricDecryptFileContent('klpdhzQ8Rl9vwpR...', '\\\\vB\\\\xBD\\\\xDA\\\\x9A\\\\xB4\\\\xF5\\\\xAD,\\\\xFAH\\\\x181\\\\xF5\\\\x87...', 'AES-256-CTR', 0, 0)\\n#2 \\\/data\\\/web\\\/1\\\/000\\\/029\\\/466\\\/83503\\\/htdocs\\\/cloud\\\/nextcloud\\\/lib\\\/private\\\/Files\\\/Stream\\\/Encryption.php(464): OCA\\\\Encryption\\\\Crypto\\\\Encryption->decrypt(*** sensitive parameters replaced ***)\\n#3 \\\/data\\\/web\\\/1\\\/000\\\/029\\\/466\\\/83503\\\/htdocs\\\/cloud\\\/nextcloud\\\/lib\\\/private\\\/Files\\\/Stream\\\/Encryption.php(295): OC\\\\Files\\\\Stream\\\\Encryption->readCache()\\n#4 [internal function]: OC\\\\Files\\\\Stream\\\\Encryption->stream_read(8192)\\n#5 \\\/data\\\/web\\\/1\\\/000\\\/029\\\/466\\\/83503\\\/htdocs\\\/cloud\\\/nextcloud\\\/3rdparty\\\/icewind\\\/streams\\\/src\\\/Wrapper.php(83): fread(Resource id #666, 8192)\\n#6 \\\/data\\\/web\\\/1\\\/000\\\/029\\\/466\\\/83503\\\/htdocs\\\/cloud\\\/nextcloud\\\/3rdparty\\\/icewind\\\/streams\\\/src\\\/CallbackWrapper.php(91): Icewind\\\\Streams\\\\Wrapper->stream_read(8192)\\n#7 [internal function]: Icewind\\\\Streams\\\\CallbackWrapper->stream_read(8192)\\n#8 \\\/data\\\/web\\\/1\\\/000\\\/029\\\/466\\\/83503\\\/htdocs\\\/cloud\\\/nextcloud\\\/3rdparty\\\/sabre\\\/http\\\/lib\\\/Sapi.php(80): stream_copy_to_stream(Resource id #670, Resource id #680, '640340')\\n#9 \\\/data\\\/web\\\/1\\\/000\\\/029\\\/466\\\/83503\\\/htdocs\\\/cloud\\\/nextcloud\\\/3rdparty\\\/sabre\\\/dav\\\/lib\\\/DAV\\\/Server.php(498): Sabre\\\\HTTP\\\\Sapi::sendResponse(Object(Sabre\\\\HTTP\\\\Response))\\n#10 \\\/data\\\/web\\\/1\\\/000\\\/029\\\/466\\\/83503\\\/htdocs\\\/cloud\\\/nextcloud\\\/3rdparty\\\/sabre\\\/dav\\\/lib\\\/DAV\\\/Server.php(254): Sabre\\\\DAV\\\\Server->invokeMethod(Object(Sabre\\\\HTTP\\\\Request), Object(Sabre\\\\HTTP\\\\Response))\\n#11 \\\/data\\\/web\\\/1\\\/000\\\/029\\\/466\\\/83503\\\/htdocs\\\/cloud\\\/nextcloud\\\/apps\\\/dav\\\/lib\\\/Server.php(283): Sabre\\\\DAV\\\\Server->exec()\\n#12 \\\/data\\\/web\\\/1\\\/000\\\/029\\\/466\\\/83503\\\/htdocs\\\/cloud\\\/nextcloud\\\/apps\\\/dav\\\/appinfo\\\/v2\\\/remote.php(35): OCA\\\\DAV\\\\Server->exec()\\n#13 \\\/data\\\/web\\\/1\\\/000\\\/029\\\/466\\\/83503\\\/htdocs\\\/cloud\\\/nextcloud\\\/remote.php(164): require_once('\\\/data\\\/web\\\/1\\\/000...')\\n#14 {main}\",\"File\":\"\\\/data\\\/web\\\/1\\\/000\\\/029\\\/466\\\/83503\\\/htdocs\\\/cloud\\\/nextcloud\\\/apps\\\/encryption\\\/lib\\\/Crypto\\\/Crypt.php\",\"Line\":485,\"Hint\":\"Ung\\u00fcltige Signatur\"}","userAgent":"Mozilla\/5.0 (Windows) mirall\/2.3.2 (build 1) (Nextcloud)","version":"13.0.0.14"}
{"reqId":"vLRlK2PlAfDKCgOKnvH7","level":4,"time":"2018-02-28T08:27:08+00:00","remoteAddr":"193.25.22.47","user":"FDeitelhoff","app":"webdav","method":"GET","url":"\/remote.php\/dav\/files\/FDeitelhoff\/3.%20Publikationen\/8.%20Gastbeitr%C3%A4ge\/2.%20itemis%20AG\/ANTLR4%20im%20Web%20-%20Ein%20Erfahrungsbericht.docx","message":"Exception: {\"Exception\":\"OCP\\\\Encryption\\\\Exceptions\\\\GenericEncryptionException\",\"Message\":\"Bad Signature\",\"Code\":0,\"Trace\":\"#0 \\\/data\\\/web\\\/1\\\/000\\\/029\\\/466\\\/83503\\\/htdocs\\\/cloud\\\/nextcloud\\\/apps\\\/encryption\\\/lib\\\/Crypto\\\/Crypt.php(465): OCA\\\\Encryption\\\\Crypto\\\\Crypt->checkSignature('fhj2qc49g3eDTVS...', '\\\\xC4\\\\xAC\\\\xDD\\\\x9E\\\\xE0Z.\\\\xC7\\\\xBA)+\\\\xFAj\\\\x8C\\\\xAF...', '3fed2ed0a673cb7...')\\n#1 \\\/data\\\/web\\\/1\\\/000\\\/029\\\/466\\\/83503\\\/htdocs\\\/cloud\\\/nextcloud\\\/apps\\\/encryption\\\/lib\\\/Crypto\\\/Encryption.php(380): OCA\\\\Encryption\\\\Crypto\\\\Crypt->symmetricDecryptFileContent('fhj2qc49g3eDTVS...', '\\\\xC4\\\\xAC\\\\xDD\\\\x9E\\\\xE0Z.\\\\xC7\\\\xBA)+\\\\xFAj\\\\x8C\\\\xAF...', 'AES-256-CTR', 0, 0)\\n#2 \\\/data\\\/web\\\/1\\\/000\\\/029\\\/466\\\/83503\\\/htdocs\\\/cloud\\\/nextcloud\\\/lib\\\/private\\\/Files\\\/Stream\\\/Encryption.php(464): OCA\\\\Encryption\\\\Crypto\\\\Encryption->decrypt(*** sensitive parameters replaced ***)\\n#3 \\\/data\\\/web\\\/1\\\/000\\\/029\\\/466\\\/83503\\\/htdocs\\\/cloud\\\/nextcloud\\\/lib\\\/private\\\/Files\\\/Stream\\\/Encryption.php(295): OC\\\\Files\\\\Stream\\\\Encryption->readCache()\\n#4 [internal function]: OC\\\\Files\\\\Stream\\\\Encryption->stream_read(8192)\\n#5 \\\/data\\\/web\\\/1\\\/000\\\/029\\\/466\\\/83503\\\/htdocs\\\/cloud\\\/nextcloud\\\/3rdparty\\\/icewind\\\/streams\\\/src\\\/Wrapper.php(83): fread(Resource id #666, 8192)\\n#6 \\\/data\\\/web\\\/1\\\/000\\\/029\\\/466\\\/83503\\\/htdocs\\\/cloud\\\/nextcloud\\\/3rdparty\\\/icewind\\\/streams\\\/src\\\/CallbackWrapper.php(91): Icewind\\\\Streams\\\\Wrapper->stream_read(8192)\\n#7 [internal function]: Icewind\\\\Streams\\\\CallbackWrapper->stream_read(8192)\\n#8 \\\/data\\\/web\\\/1\\\/000\\\/029\\\/466\\\/83503\\\/htdocs\\\/cloud\\\/nextcloud\\\/3rdparty\\\/sabre\\\/http\\\/lib\\\/Sapi.php(80): stream_copy_to_stream(Resource id #670, Resource id #680, '25700')\\n#9 \\\/data\\\/web\\\/1\\\/000\\\/029\\\/466\\\/83503\\\/htdocs\\\/cloud\\\/nextcloud\\\/3rdparty\\\/sabre\\\/dav\\\/lib\\\/DAV\\\/Server.php(498): Sabre\\\\HTTP\\\\Sapi::sendResponse(Object(Sabre\\\\HTTP\\\\Response))\\n#10 \\\/data\\\/web\\\/1\\\/000\\\/029\\\/466\\\/83503\\\/htdocs\\\/cloud\\\/nextcloud\\\/3rdparty\\\/sabre\\\/dav\\\/lib\\\/DAV\\\/Server.php(254): Sabre\\\\DAV\\\\Server->invokeMethod(Object(Sabre\\\\HTTP\\\\Request), Object(Sabre\\\\HTTP\\\\Response))\\n#11 \\\/data\\\/web\\\/1\\\/000\\\/029\\\/466\\\/83503\\\/htdocs\\\/cloud\\\/nextcloud\\\/apps\\\/dav\\\/lib\\\/Server.php(283): Sabre\\\\DAV\\\\Server->exec()\\n#12 \\\/data\\\/web\\\/1\\\/000\\\/029\\\/466\\\/83503\\\/htdocs\\\/cloud\\\/nextcloud\\\/apps\\\/dav\\\/appinfo\\\/v2\\\/remote.php(35): OCA\\\\DAV\\\\Server->exec()\\n#13 \\\/data\\\/web\\\/1\\\/000\\\/029\\\/466\\\/83503\\\/htdocs\\\/cloud\\\/nextcloud\\\/remote.php(164): require_once('\\\/data\\\/web\\\/1\\\/000...')\\n#14 {main}\",\"File\":\"\\\/data\\\/web\\\/1\\\/000\\\/029\\\/466\\\/83503\\\/htdocs\\\/cloud\\\/nextcloud\\\/apps\\\/encryption\\\/lib\\\/Crypto\\\/Crypt.php\",\"Line\":485,\"Hint\":\"Ung\\u00fcltige Signatur\"}","userAgent":"Mozilla\/5.0 (Windows) mirall\/2.3.2 (build 1) (Nextcloud)","version":"13.0.0.14"}
{"reqId":"CAIo5WEQ6xj6YcnbtAB4","level":3,"time":"2018-03-01T09:15:39+00:00","remoteAddr":"","user":"--","app":"no app in context","method":"--","url":"--","message":"Can not decrypt this file, probably this is a shared file. Please ask the file owner to reshare the file with you.","userAgent":"--","version":"13.0.0.14"}
{"reqId":"CAIo5WEQ6xj6YcnbtAB4","level":3,"time":"2018-03-01T09:15:39+00:00","remoteAddr":"","user":"--","app":"no app in context","method":"--","url":"--","message":"Couldn't re-calculate unencrypted size for files_versions\/3. Publikationen\/2. Vortr\u00e4ge\/2. Seminare\/3. LEGO Education\/2. Bilder\/5. K\u00f6ln\/IMG_0110.JPG.v1477568926","userAgent":"--","version":"13.0.0.14"}
{"reqId":"CAIo5WEQ6xj6YcnbtAB4","level":3,"time":"2018-03-01T09:15:39+00:00","remoteAddr":"","user":"--","app":"no app in context","method":"--","url":"--","message":"Exception: {\"Exception\":\"OC\\\\Encryption\\\\Exceptions\\\\DecryptionFailedException\",\"Message\":\"Can not decrypt this file, probably this is a shared file. Please ask the file owner to reshare the file with you.\",\"Code\":0,\"Trace\":\"#0 \\\/data\\\/web\\\/1\\\/000\\\/029\\\/466\\\/83503\\\/htdocs\\\/cloud\\\/nextcloud\\\/lib\\\/private\\\/Files\\\/Storage\\\/Wrapper\\\/Encryption.php(576): OCA\\\\Encryption\\\\Crypto\\\\Encryption->decrypt(*** sensitive parameters replaced ***)\\n#1 \\\/data\\\/web\\\/1\\\/000\\\/029\\\/466\\\/83503\\\/htdocs\\\/cloud\\\/nextcloud\\\/lib\\\/private\\\/Files\\\/Storage\\\/Wrapper\\\/Encryption.php(495): OC\\\\Files\\\\Storage\\\\Wrapper\\\\Encryption->fixUnencryptedSize('files_versions\\\/...', 1687444, 1687444)\\n#2 \\\/data\\\/web\\\/1\\\/000\\\/029\\\/466\\\/83503\\\/htdocs\\\/cloud\\\/nextcloud\\\/lib\\\/private\\\/Files\\\/Storage\\\/Wrapper\\\/Encryption.php(187): OC\\\\Files\\\\Storage\\\\Wrapper\\\\Encryption->verifyUnencryptedSize('files_versions\\\/...', 1687444)\\n#3 \\\/data\\\/web\\\/1\\\/000\\\/029\\\/466\\\/83503\\\/htdocs\\\/cloud\\\/nextcloud\\\/lib\\\/private\\\/Files\\\/Storage\\\/Wrapper\\\/Wrapper.php(581): OC\\\\Files\\\\Storage\\\\Wrapper\\\\Encryption->getMetaData('files_versions\\\/...')\\n#4 \\\/data\\\/web\\\/1\\\/000\\\/029\\\/466\\\/83503\\\/htdocs\\\/cloud\\\/nextcloud\\\/lib\\\/private\\\/Files\\\/Cache\\\/Scanner.php(112): OC\\\\Files\\\\Storage\\\\Wrapper\\\\Wrapper->getMetaData('files_versions\\\/...')\\n#5 \\\/data\\\/web\\\/1\\\/000\\\/029\\\/466\\\/83503\\\/htdocs\\\/cloud\\\/nextcloud\\\/lib\\\/private\\\/Files\\\/Cache\\\/Scanner.php(150): OC\\\\Files\\\\Cache\\\\Scanner->getData('files_versions\\\/...')\\n#6 \\\/data\\\/web\\\/1\\\/000\\\/029\\\/466\\\/83503\\\/htdocs\\\/cloud\\\/nextcloud\\\/lib\\\/private\\\/Files\\\/Cache\\\/Scanner.php(435): OC\\\\Files\\\\Cache\\\\Scanner->scanFile('files_versions\\\/...', 3, '91201', Object(OC\\\\Files\\\\Cache\\\\CacheEntry), true)\\n#7 \\\/data\\\/web\\\/1\\\/000\\\/029\\\/466\\\/83503\\\/htdocs\\\/cloud\\\/nextcloud\\\/lib\\\/private\\\/Files\\\/Cache\\\/Scanner.php(403): OC\\\\Files\\\\Cache\\\\Scanner->handleChildren('files_versions\\\/...', true, 3, '91201', true, 9726430)\\n#8 \\\/data\\\/web\\\/1\\\/000\\\/029\\\/466\\\/83503\\\/htdocs\\\/cloud\\\/nextcloud\\\/lib\\\/private\\\/Files\\\/Cache\\\/Scanner.php(406): OC\\\\Files\\\\Cache\\\\Scanner->scanChildren('files_versions\\\/...', true, 3, 91201, true)\\n#9 \\\/data\\\/web\\\/1\\\/000\\\/029\\\/466\\\/83503\\\/htdocs\\\/cloud\\\/nextcloud\\\/lib\\\/private\\\/Files\\\/Cache\\\/Scanner.php(406): OC\\\\Files\\\\Cache\\\\Scanner->scanChildren('files_versions\\\/...', true, 3, 91054, true)\\n#10 \\\/data\\\/web\\\/1\\\/000\\\/029\\\/466\\\/83503\\\/htdocs\\\/cloud\\\/nextcloud\\\/lib\\\/private\\\/Files\\\/Cache\\\/Scanner.php(406): OC\\\\Files\\\\Cache\\\\Scanner->scanChildren('files_versions\\\/...', true, 3, 91053, true)\\n#11 \\\/data\\\/web\\\/1\\\/000\\\/029\\\/466\\\/83503\\\/htdocs\\\/cloud\\\/nextcloud\\\/lib\\\/private\\\/Files\\\/Cache\\\/Scanner.php(406): OC\\\\Files\\\\Cache\\\\Scanner->scanChildren('files_versions\\\/...', true, 3, 13181, true)\\n#12 \\\/data\\\/web\\\/1\\\/000\\\/029\\\/466\\\/83503\\\/htdocs\\\/cloud\\\/nextcloud\\\/lib\\\/private\\\/Files\\\/Cache\\\/Scanner.php(406): OC\\\\Files\\\\Cache\\\\Scanner->scanChildren('files_versions\\\/...', true, 3, 13180, true)\\n#13 \\\/data\\\/web\\\/1\\\/000\\\/029\\\/466\\\/83503\\\/htdocs\\\/cloud\\\/nextcloud\\\/lib\\\/private\\\/Files\\\/Cache\\\/Scanner.php(406): OC\\\\Files\\\\Cache\\\\Scanner->scanChildren('files_versions\\\/...', true, 3, 13179, true)\\n#14 \\\/data\\\/web\\\/1\\\/000\\\/029\\\/466\\\/83503\\\/htdocs\\\/cloud\\\/nextcloud\\\/lib\\\/private\\\/Files\\\/Cache\\\/Scanner.php(406): OC\\\\Files\\\\Cache\\\\Scanner->scanChildren('files_versions', true, 3, 2042, true)\\n#15 \\\/data\\\/web\\\/1\\\/000\\\/029\\\/466\\\/83503\\\/htdocs\\\/cloud\\\/nextcloud\\\/lib\\\/private\\\/Files\\\/Cache\\\/Scanner.php(337): OC\\\\Files\\\\Cache\\\\Scanner->scanChildren('', true, 3, 31, true)\\n#16 \\\/data\\\/web\\\/1\\\/000\\\/029\\\/466\\\/83503\\\/htdocs\\\/cloud\\\/nextcloud\\\/lib\\\/private\\\/Files\\\/Utils\\\/Scanner.php(244): OC\\\\Files\\\\Cache\\\\Scanner->scan('', true, 3)\\n#17 \\\/data\\\/web\\\/1\\\/000\\\/029\\\/466\\\/83503\\\/htdocs\\\/cloud\\\/nextcloud\\\/apps\\\/files\\\/lib\\\/Command\\\/Scan.php(161): OC\\\\Files\\\\Utils\\\\Scanner->scan('\\\/FDeitelhoff')\\n#18 \\\/data\\\/web\\\/1\\\/000\\\/029\\\/466\\\/83503\\\/htdocs\\\/cloud\\\/nextcloud\\\/apps\\\/files\\\/lib\\\/Command\\\/Scan.php(234): OCA\\\\Files\\\\Command\\\\Scan->scanFiles('FDeitelhoff', '\\\/FDeitelhoff', false, Object(Symfony\\\\Component\\\\Console\\\\Output\\\\ConsoleOutput), false)\\n#19 \\\/data\\\/web\\\/1\\\/000\\\/029\\\/466\\\/83503\\\/htdocs\\\/cloud\\\/nextcloud\\\/3rdparty\\\/symfony\\\/console\\\/Command\\\/Command.php(264): OCA\\\\Files\\\\Command\\\\Scan->execute(Object(Symfony\\\\Component\\\\Console\\\\Input\\\\ArgvInput), Object(Symfony\\\\Component\\\\Console\\\\Output\\\\ConsoleOutput))\\n#20 \\\/data\\\/web\\\/1\\\/000\\\/029\\\/466\\\/83503\\\/htdocs\\\/cloud\\\/nextcloud\\\/core\\\/Command\\\/Base.php(161): Symfony\\\\Component\\\\Console\\\\Command\\\\Command->run(Object(Symfony\\\\Component\\\\Console\\\\Input\\\\ArgvInput), Object(Symfony\\\\Component\\\\Console\\\\Output\\\\ConsoleOutput))\\n#21 \\\/data\\\/web\\\/1\\\/000\\\/029\\\/466\\\/83503\\\/htdocs\\\/cloud\\\/nextcloud\\\/3rdparty\\\/symfony\\\/console\\\/Application.php(874): OC\\\\Core\\\\Command\\\\Base->run(Object(Symfony\\\\Component\\\\Console\\\\Input\\\\ArgvInput), Object(Symfony\\\\Component\\\\Console\\\\Output\\\\ConsoleOutput))\\n#22 \\\/data\\\/web\\\/1\\\/000\\\/029\\\/466\\\/83503\\\/htdocs\\\/cloud\\\/nextcloud\\\/3rdparty\\\/symfony\\\/console\\\/Application.php(228): Symfony\\\\Component\\\\Console\\\\Application->doRunCommand(Object(OCA\\\\Files\\\\Command\\\\Scan), Object(Symfony\\\\Component\\\\Console\\\\Input\\\\ArgvInput), Object(Symfony\\\\Component\\\\Console\\\\Output\\\\ConsoleOutput))\\n#23 \\\/data\\\/web\\\/1\\\/000\\\/029\\\/466\\\/83503\\\/htdocs\\\/cloud\\\/nextcloud\\\/3rdparty\\\/symfony\\\/console\\\/Application.php(130): Symfony\\\\Component\\\\Console\\\\Application->doRun(Object(Symfony\\\\Component\\\\Console\\\\Input\\\\ArgvInput), Object(Symfony\\\\Component\\\\Console\\\\Output\\\\ConsoleOutput))\\n#24 \\\/data\\\/web\\\/1\\\/000\\\/029\\\/466\\\/83503\\\/htdocs\\\/cloud\\\/nextcloud\\\/lib\\\/private\\\/Console\\\/Application.php(173): Symfony\\\\Component\\\\Console\\\\Application->run(NULL, NULL)\\n#25 \\\/data\\\/web\\\/1\\\/000\\\/029\\\/466\\\/83503\\\/htdocs\\\/cloud\\\/nextcloud\\\/console.php(90): OC\\\\Console\\\\Application->run()\\n#26 \\\/data\\\/web\\\/1\\\/000\\\/029\\\/466\\\/83503\\\/htdocs\\\/cloud\\\/nextcloud\\\/occ(11): require_once('\\\/data\\\/web\\\/1\\\/000...')\\n#27 {main}\",\"File\":\"\\\/data\\\/web\\\/1\\\/000\\\/029\\\/466\\\/83503\\\/htdocs\\\/cloud\\\/nextcloud\\\/apps\\\/encryption\\\/lib\\\/Crypto\\\/Encryption.php\",\"Line\":377,\"Hint\":\"Can not decrypt this file, probably this is a shared file. Please ask the file owner to reshare the file with you.\"}","userAgent":"--","version":"13.0.0.14"}
Nextcloud client logs (F12):
03-01 20:57:15:881 0x8093d9c sqlite_profile: _SQL_ SELECT phash, pathlen, path, inode, uid, gid, mode, modtime, type, md5, fileid, remotePerm, filesize, ignoredChildrenRemote, contentChecksum, contentChecksumTypeId FROM metadata WHERE phash=?1: 0
03-01 20:57:15:882 0x8093d9c _csync_detect_update: Database entry found, compare: 1508851675 <-> 1508851675, etag: (null) <-> 533bb372c6454afd6275424b1298abbe, inode: 29727 <-> 29727, size: 315599 <-> 315599, perms: <-> RGDNVW, ignore: 0
03-01 20:57:15:882 0x8093d9c _csync_detect_update: file: _noch durchgehen (Paper)/yang-pldi11.pdf, instruction: INSTRUCTION_NONE <<=
03-01 20:57:15:882 0x8093d9c csync_walker: file: D:/Fabis Cloud/_noch durchgehen (Paper)/_2e85c425f477e4e8491859703861e44c_Text-practice-exercises-Module-2.5.docx [inode=29294 size=10714]
03-01 20:57:15:882 0x8093d9c sqlite_profile: _SQL_ SELECT phash, pathlen, path, inode, uid, gid, mode, modtime, type, md5, fileid, remotePerm, filesize, ignoredChildrenRemote, contentChecksum, contentChecksumTypeId FROM metadata WHERE phash=?1: 0
03-01 20:57:15:882 0x8093d9c _csync_detect_update: Database entry found, compare: 1508155181 <-> 1508155181, etag: (null) <-> d21af7301c4d37b07ceea47b16581f3a, inode: 29294 <-> 29294, size: 10714 <-> 10714, perms: <-> RGDNVW, ignore: 0
03-01 20:57:15:882 0x8093d9c _csync_detect_update: file: _noch durchgehen (Paper)/_2e85c425f477e4e8491859703861e44c_Text-practice-exercises-Module-2.5.docx, instruction: INSTRUCTION_NONE <<=
03-01 20:57:15:882 0x8093d9c csync_walker: file: D:/Fabis Cloud/_noch durchgehen (Paper)/_73b0f0b7e830395c8fd3ff45ac4b6740_Text-demo-edit-2.docx [inode=29296 size=14615]
03-01 20:57:15:882 0x8093d9c sqlite_profile: _SQL_ SELECT phash, pathlen, path, inode, uid, gid, mode, modtime, type, md5, fileid, remotePerm, filesize, ignoredChildrenRemote, contentChecksum, contentChecksumTypeId FROM metadata WHERE phash=?1: 0
03-01 20:57:15:882 0x8093d9c _csync_detect_update: Database entry found, compare: 1508401403 <-> 1508401403, etag: (null) <-> c16052c8c651649c103a9b0e2a244fe9, inode: 29296 <-> 29296, size: 14615 <-> 14615, perms: <-> RGDNVW, ignore: 0
03-01 20:57:15:882 0x8093d9c _csync_detect_update: file: _noch durchgehen (Paper)/_73b0f0b7e830395c8fd3ff45ac4b6740_Text-demo-edit-2.docx, instruction: INSTRUCTION_NONE <<=
03-01 20:57:15:882 0x8093d9c csync_walker: file: D:/Fabis Cloud/_noch durchgehen (Paper)/_974fa7509d583eabb592839f9716fe25_Lecture1.pdf [inode=29297 size=3461775]
03-01 20:57:15:882 0x8093d9c sqlite_profile: _SQL_ SELECT phash, pathlen, path, inode, uid, gid, mode, modtime, type, md5, fileid, remotePerm, filesize, ignoredChildrenRemote, contentChecksum, contentChecksumTypeId FROM metadata WHERE phash=?1: 0
03-01 20:57:15:882 0x8093d9c _csync_detect_update: Database entry found, compare: 1508749492 <-> 1508749492, etag: (null) <-> 9024960f041c6cc7d7b305c7292d9b54, inode: 29297 <-> 29297, size: 3461775 <-> 3461775, perms: <-> RGDNVW, ignore: 0
03-01 20:57:15:882 0x8093d9c _csync_detect_update: file: _noch durchgehen (Paper)/_974fa7509d583eabb592839f9716fe25_Lecture1.pdf, instruction: INSTRUCTION_NONE <<=
03-01 20:57:15:882 0x8093d9c csync_walker: file: D:/Fabis Cloud/_noch durchgehen (Paper)/_d2481172f3382667dbc61a258c4d804a_Text-of-practice-exercises-for-2.3.docx [inode=29312 size=13016]
03-01 20:57:15:882 0x8093d9c sqlite_profile: _SQL_ SELECT phash, pathlen, path, inode, uid, gid, mode, modtime, type, md5, fileid, remotePerm, filesize, ignoredChildrenRemote, contentChecksum, contentChecksumTypeId FROM metadata WHERE phash=?1: 0
03-01 20:57:15:882 0x8093d9c _csync_detect_update: Database entry found, compare: 1508153010 <-> 1508153010, etag: (null) <-> 5ad3ea5a4253c692e9f65ec4781252ec, inode: 29312 <-> 29312, size: 13016 <-> 13016, perms: <-> RGDNVW, ignore: 0
03-01 20:57:15:882 0x8093d9c _csync_detect_update: file: _noch durchgehen (Paper)/_d2481172f3382667dbc61a258c4d804a_Text-of-practice-exercises-for-2.3.docx, instruction: INSTRUCTION_NONE <<=
03-01 20:57:15:882 0x8093d9c csync_ftw: <= Closing walk for D:/Fabis Cloud/_noch durchgehen (Paper) with read_from_db 0
03-01 20:57:15:882 0x8093d9c csync_ftw: <= Closing walk for D:/Fabis Cloud with read_from_db 0
03-01 20:57:15:882 0x8093d9c csync_update: Update detection for local replica took 3.81 seconds walking 18016 files.
03-01 20:57:15:882 3100 OCC::DiscoveryJob::remote_vio_opendir_hook: OCC::DiscoveryJob(0x9e45c78) Calling into main thread...
03-01 20:58:39:859 16944 OCC::AbstractNetworkJob::start: !!! OCC::LsColJob created for "https://cloud.fabiandeitelhoff.de" + "" "OCC::DiscoverySingleDirectoryJob"
03-01 20:58:40:091 16944 OCC::AbstractNetworkJob::slotFinished: void OCC::AbstractNetworkJob::slotFinished() QNetworkReply::NetworkError(RemoteHostClosedError) "Verbindung beendet" QVariant(Invalid)
03-01 20:58:40:107 16944 OCC::PropfindJob::finished: PROPFIND request *not* successful, http result code is 0 ""
03-01 20:58:40:547 16944 OCC::AccountState::checkConnectivity: ConnectionValidator already running, ignoring "FDeitelhoff@cloud.fabiandeitelhoff.de"
03-01 20:58:40:551 16944 OCC::AbstractNetworkJob::slotTimeout: virtual void OCC::AbstractNetworkJob::slotTimeout() OCC::PropfindJob(0x9ff3c30) Timeout QUrl("https://cloud.fabiandeitelhoff.de/remote.php/webdav/")
03-01 20:58:40:553 16944 OCC::AbstractNetworkJob::slotFinished: void OCC::AbstractNetworkJob::slotFinished() QNetworkReply::NetworkError(OperationCanceledError) "Operation abgebrochen" QVariant(Invalid)
03-01 20:58:40:555 16944 OCC::PropfindJob::finished: PROPFIND request *not* successful, http result code is 0 ""
03-01 20:58:40:558 16944 unknown: QIODevice::read (QNetworkReplyHttpImpl): device not open
03-01 20:58:40:559 16944 OCC::AccountState::slotConnectionValidatorResult: AccountState connection status change: "Connected" -> "Timeout"
03-01 20:58:40:561 16944 OCC::AccountState::setState: AccountState state change: "Verbunden" -> "Netzwerkfehler"
03-01 20:58:40:563 16944 OCC::AccountSettings::showConnectionLabel: "Keine Verbindung zu Nextcloud auf <a href=\"https://cloud.fabiandeitelhoff.de\">https://cloud.fabiandeitelhoff.de</a>\nOperation abgebrochen"
03-01 20:58:40:567 16944 OCC::FolderMan::slotAccountStateChanged: Account "FDeitelhoff@cloud.fabiandeitelhoff.de" disconnected or paused, terminating or descheduling sync folders
03-01 20:58:40:569 16944 OCC::Folder::slotTerminateSync: folder "2" Terminating!
03-01 20:58:40:570 16944 OCC::SyncEngine::abort: void OCC::SyncEngine::abort() OCC::DiscoveryMainThread(0xf9d66f8)
03-01 20:58:40:571 16944 OCC::AbstractNetworkJob::slotFinished: void OCC::AbstractNetworkJob::slotFinished() QNetworkReply::NetworkError(OperationCanceledError) "Operation abgebrochen" QVariant(Invalid)
03-01 20:58:40:573 16944 OCC::DiscoverySingleDirectoryJob::lsJobFinishedWithErrorSlot: void OCC::DiscoverySingleDirectoryJob::lsJobFinishedWithErrorSlot(QNetworkReply*) "Operation abgebrochen" 0 QNetworkReply::NetworkError(OperationCanceledError)
03-01 20:58:40:574 3100 OCC::DiscoveryJob::remote_vio_opendir_hook: OCC::DiscoveryJob(0x9e45c78) ...Returned from main thread
03-01 20:58:40:574 3100 OCC::DiscoveryJob::remote_vio_opendir_hook: 5 when opening msg= "Abbruch durch den Benutzer"
03-01 20:58:40:574 0x8093d9c csync_ftw: Aborted!
03-01 20:58:40:574 0x8093d9c csync_statedb_close: sqlite3_close=0
03-01 20:58:40:913 16944 OCC::SyncEngine::handleSyncError: #### ERROR during csync_update : "Abbruch durch den Benutzer Abbruch durch den Benutzer"
03-01 20:58:40:913 16944 OCC::SyncEngine::handleSyncError: Update phase was aborted by user!
03-01 20:58:40:913 16944 OCC::SyncJournalDb::close: void OCC::SyncJournalDb::close() "D:/Fabis Cloud/._sync_94be8d577015.db"
03-01 20:58:40:913 16944 OCC::SyncJournalDb::commitTransaction: No database Transaction to commit
03-01 20:58:40:932 16944 OCC::SyncEngine::finalize: CSync run took 88881
03-01 20:58:40:936 16944 OCC::FolderWatcher::pathIsIgnored: * Ignoring file "D:/Fabis Cloud/._sync_94be8d577015.db-shm"
03-01 20:58:40:937 16944 OCC::FolderWatcher::pathIsIgnored: * Ignoring file "D:/Fabis Cloud/._sync_94be8d577015.db-wal"
03-01 20:58:40:939 16944 OCC::Folder::slotSyncFinished: - client version 2.3.2 (build 1) Qt 5.6.2 SSL OpenSSL 1.0.2h 3 May 2016
03-01 20:58:40:940 16944 OCC::Folder::slotSyncFinished: -> SyncEngine finished without problem.
03-01 20:58:40:947 16944 OCC::Folder::showSyncResultPopup: OO folder slotSyncFinished: result: 4
03-01 20:58:40:953 16944 OCC::ownCloudGui::slotSyncStateChange: Sync state changed for folder "https://cloud.fabiandeitelhoff.de/remote.php/webdav/" : "Success"
03-01 20:58:40:961 16944 OCC::FolderWatcher::pathIsIgnored: * Ignoring file "D:/Fabis Cloud/.owncloudsync.log"
03-01 20:58:41:154 16944 OCC::FolderMan::slotFolderSyncFinished: <===================================== sync finished for "https://cloud.fabiandeitelhoff.de/remote.php/webdav/"
03-01 20:58:41:780 16944 OCC::AbstractNetworkJob::slotFinished: void OCC::AbstractNetworkJob::slotFinished() QNetworkReply::NetworkError(RemoteHostClosedError) "Verbindung beendet" QVariant(Invalid)
03-01 20:58:41:783 16944 OCC::JsonApiJob::finished: Network error: "ocs/v2.php/apps/notifications/api/v1/notifications" "Verbindung beendet" QVariant(Invalid)
03-01 20:58:41:785 16944 OCC::ServerNotificationHandler::slotNotificationsReceived: void OCC::ServerNotificationHandler::slotNotificationsReceived(const QVariantMap&, int) Notifications failed with status code 0
03-01 20:58:41:937 16944 OCC::AbstractNetworkJob::slotFinished: void OCC::AbstractNetworkJob::slotFinished() QNetworkReply::NetworkError(RemoteHostClosedError) "Verbindung beendet" QVariant(Invalid)
03-01 20:58:41:940 16944 OCC::JsonApiJob::finished: Network error: "ocs/v2.php/apps/notifications/api/v1/notifications" "Verbindung beendet" QVariant(Invalid)
03-01 20:58:41:943 16944 OCC::ServerNotificationHandler::slotNotificationsReceived: void OCC::ServerNotificationHandler::slotNotificationsReceived(const QVariantMap&, int) Notifications failed with status code 0
Maybe someone can give me a hint.
Best