.htm and .html files cannot be synced; e-tag error

PS:  I am also getting the occasional error 500 when syncing text files.  Yes, I removed and re-added my sync connection.

Are you using a reverse proxy, or some type of cache, cloudflare?

Any PHP errors logged on the server?

No proxy, and host has turned of NGINX caching; first thing I thought of.  No errors logged either.

It would help if you could include some of the Nextcloud log (F12 from Settings panel of the sync app)

Hi,

Apologies, I did find a relevant error log entry, on the server:

[Fri Mar 25 04:00:58.300340 2022] [cgi:error] [pid 3093492] [client X.X.X.X:44786] AH01215: #4 /home/ustorage/fstore.ruggieroav.net/system/modules/fileman/sections/default/php/webdav.php(5): FileRun\\Web in /home/ustorage/fstore.ruggieroav.net/system/classes/vendor/FileRun/Files/Actions/Upload/PUT/Upload.php on line 36: /usr/local/cpanel/cgi-sys/ea-php74

I'll post the relevant error logs from Nextcloud when I am back on my home PC.

The Nextcloud logs are verbose, but I think this represents an error:
2022-03-25 17:17:42:020 [ debug nextcloud.sync.statustracker C:\Users\sysadmin\AppData\Local\Temp\2\windows-9041\client-building\desktop\src\libsync\syncfilestatustracker.cpp:274 ] [ OCC::SyncFileStatusTracker::slotItemCompleted ]: Item completed "Benassi Bros/No Matter What I Do/AlbumArt_{B5020207-474E-4720-7F59-D82DF3F26200}_Large.jpg" OCC::SyncFileItem::NoStatus CSyncEnums::CSYNC_INSTRUCTION_UPDATE_METADATA

(note that these AlbumArt files are another item that Nextcloud has always had issue with)

I have the same issue after multiple installs over the months/years. I had reported the issue before, but I didn't provide adequate information for an investigation. I didn't notice the file types causing the e-tag error until it was pointed out above, it does seem consistent with the file type.

I have hundreds of these errors and it does seem to be almost all.html files in my case. Here's a snippet of an example.

I'm on FileRun server 20220519 via Docker on Unraid with NextCloud client 3.4.2 with Windows 10 Pro. I use Nginx Proxy Manager for my reverse proxy.

2022-06-23 10:19:48:593 [ info nextcloud.sync.propagator C:\Users\sysadmin\AppData\Local\Temp\2\windows-9041\client-building\desktop\src\libsync\owncloudpropagator.cpp:1161 ]:    PropagateDirectory::slotSubJobsFinished emit finished OCC::SyncFileItem::BlacklistedError
2022-06-23 10:19:48:598 [ info nextcloud.sync.propagator.root.directory C:\Users\sysadmin\AppData\Local\Temp\2\windows-9041\client-building\desktop\src\libsync\owncloudpropagator.cpp:1214 ]:    scheduleSelfOrChild OCC::PropagatorJob::Running pending uploads 0 subjobs state OCC::PropagatorJob::Running
2022-06-23 10:19:48:598 [ info nextcloud.sync.propagator C:\Users\sysadmin\AppData\Local\Temp\2\windows-9041\client-building\desktop\src\libsync\owncloudpropagator.h:212 ]:    Starting CSyncEnums::CSYNC_INSTRUCTION_IGNORE propagation of "Apps/winMd5SumPortable/help.html" by OCC::PropagateIgnoreJob(0x253786fe0c0)
2022-06-23 10:19:48:598 [ warning nextcloud.sync.propagator C:\Users\sysadmin\AppData\Local\Temp\2\windows-9041\client-building\desktop\src\libsync\owncloudpropagator.cpp:281 ]:    Could not complete propagation of "Apps/winMd5SumPortable/help.html" by OCC::PropagateIgnoreJob(0x253786fe0c0) with status OCC::SyncFileItem::BlacklistedError and error: "No E-Tag received from server, check Proxy/Gateway (skipped due to earlier error, trying again in 56 second(s))"
2022-06-23 10:19:48:598 [ debug nextcloud.sync.statustracker C:\Users\sysadmin\AppData\Local\Temp\2\windows-9041\client-building\desktop\src\libsync\syncfilestatustracker.cpp:274 ]    [ OCC::SyncFileStatusTracker::slotItemCompleted ]:    Item completed "Apps/winMd5SumPortable/help.html" OCC::SyncFileItem::BlacklistedError CSyncEnums::CSYNC_INSTRUCTION_IGNORE
2022-06-23 10:19:48:598 [ debug nextcloud.gui.socketapi C:\Users\sysadmin\AppData\Local\Temp\2\windows-9041\client-building\desktop\src\gui\socketapi\socketapi.cpp:205 ]    [ OCC::SocketListener::sendMessage ]:    Sending SocketAPI message --> "STATUS:SYNC:C:\\Users\\Folder\\Cloud Sync" to QLocalSocket(0x2537801c110)
2022-06-23 10:19:48:598 [ debug nextcloud.sync.database.sql C:\Users\sysadmin\AppData\Local\Temp\2\windows-9041\client-building\desktop\src\common/ownsql.h:145 ]    [ OCC::SqlQuery::bindValue ]:    SQL bind 1 -6321123259699561044
2022-06-23 10:19:48:598 [ debug nextcloud.sync.database.sql C:\Users\sysadmin\AppData\Local\Temp\2\windows-9041\client-building\desktop\src\common\ownsql.cpp:295 ]    [ OCC::SqlQuery::exec ]:    SQL exec "SELECT path, inode, modtime, type, md5, fileid, remotePerm, filesize,  ignoredChildrenRemote, contentchecksumtype.name || ':' || contentChecksum, e2eMangledName, isE2eEncrypted  FROM metadata  LEFT JOIN checksumtype as contentchecksumtype ON metadata.contentChecksumTypeId == contentchecksumtype.id WHERE phash=?1"
2022-06-23 10:19:48:598 [ debug nextcloud.sync.database.sql C:\Users\sysadmin\AppData\Local\Temp\2\windows-9041\client-building\desktop\src\common/ownsql.h:145 ]    [ OCC::SqlQuery::bindValue ]:    SQL bind 1 6082860974143060839
2022-06-23 10:19:48:598 [ debug nextcloud.sync.database.sql C:\Users\sysadmin\AppData\Local\Temp\2\windows-9041\client-building\desktop\src\common\ownsql.cpp:295 ]    [ OCC::SqlQuery::exec ]:    SQL exec "SELECT path, inode, modtime, type, md5, fileid, remotePerm, filesize,  ignoredChildrenRemote, contentchecksumtype.name || ':' || contentChecksum, e2eMangledName, isE2eEncrypted  FROM metadata  LEFT JOIN checksumtype as contentchecksumtype ON metadata.contentChecksumTypeId == contentchecksumtype.id WHERE phash=?1"
2022-06-23 10:19:48:599 [ warning nextcloud.gui.activity C:\Users\sysadmin\AppData\Local\Temp\2\windows-9041\client-building\desktop\src\gui\tray\usermodel.cpp:561 ]:    Item  "Apps/winMd5SumPortable/help.html"  retrieved resulted in  "No E-Tag received from server, check Proxy/Gateway (skipped due to earlier error, trying again in 56 second(s))"

Just checking if there is more information I can provide to help understand the issue above

I also have this problem. My configuration is FileRun version 20220519 via Docker on QNAP NAS client 3.5.4 on Windows 11. I use Cloudflare Argo Tunneling service (another docker on my NAS)

2022-09-04 16:04:56:943 [ info sync.discovery C:\Users\sysadmin\AppData\Local\Temp\2\windows-11185\client-building\desktop\src\libsync\discovery.cpp:354 ]:    Processing "Zhuangzi/innersix.html" | valid: false/false/true | mtime: 0/0/1656431358 | size: 0/0/13539 | etag: ""//"72e165cdfe7221d43afee9afa00870b5" | checksum: ""//"" | perm: ""//"WDNVCKR" | fileid: ""//"00191500" | inode: 0/0/ | type: CSyncEnums::ItemTypeSkip/CSyncEnums::ItemTypeSkip/CSyncEnums::ItemTypeFile | e2ee: false/false | e2eeMangledName: ""/"" | file lock: not locked//not locked
2022-09-04 16:04:56:943 [ info sync.discovery C:\Users\sysadmin\AppData\Local\Temp\2\windows-11185\client-building\desktop\src\libsync\discovery.cpp:482 ]:    OCC::SyncFileItem::LockStatus::UnlockedItem "" "" OCC::SyncFileItem::LockOwnerType::UserLock "" 0 0
2022-09-04 16:04:56:943 [ debug nextcloud.sync.database.sql C:\Users\sysadmin\AppData\Local\Temp\2\windows-11185\client-building\desktop\src\common/ownsql.h:151 ]    [ OCC::SqlQuery::bindValue ]:    SQL bind 1 "00191500"
2022-09-04 16:04:56:943 [ debug nextcloud.sync.database.sql C:\Users\sysadmin\AppData\Local\Temp\2\windows-11185\client-building\desktop\src\common\ownsql.cpp:295 ]    [ OCC::SqlQuery::exec ]:    SQL exec "SELECT path, inode, modtime, type, md5, fileid, remotePerm, filesize,  ignoredChildrenRemote, contentchecksumtype.name || ':' || contentChecksum, e2eMangledName, isE2eEncrypted,   lock, lockOwnerDisplayName, lockOwnerId, lockType, lockOwnerEditor, lockTime, lockTimeout  FROM metadata  LEFT JOIN checksumtype as contentchecksumtype ON metadata.contentChecksumTypeId == contentchecksumtype.id WHERE fileid=?1"
2022-09-04 16:04:56:943 [ info sync.discovery C:\Users\sysadmin\AppData\Local\Temp\2\windows-11185\client-building\desktop\src\libsync\discovery.cpp:1425 ]:    Discovered "Zhuangzi/innersix.html" CSyncEnums::CSYNC_INSTRUCTION_NEW OCC::SyncFileItem::Down CSyncEnums::ItemTypeFile
2022-09-04 16:04:56:943 [ debug nextcloud.sync.database.sql C:\Users\sysadmin\AppData\Local\Temp\2\windows-11185\client-building\desktop\src\common/ownsql.h:145 ]    [ OCC::SqlQuery::bindValue ]:    SQL bind 1 "Zhuangzi/innersix.html"
2022-09-04 16:04:56:943 [ debug nextcloud.sync.database.sql C:\Users\sysadmin\AppData\Local\Temp\2\windows-11185\client-building\desktop\src\common\ownsql.cpp:295 ]    [ OCC::SqlQuery::exec ]:    SQL exec "SELECT lastTryEtag, lastTryModtime, retrycount, errorstring, lastTryTime, ignoreDuration, renameTarget, errorCategory, requestId FROM blacklist WHERE path=?1 COLLATE NOCASE"
2022-09-04 16:04:56:943 [ info sync.discovery C:\Users\sysadmin\AppData\Local\Temp\2\windows-11185\client-building\desktop\src\libsync\discovery.cpp:354 ]:    Processing "Zhuangzi/innerthree.html" | valid: false/false/true | mtime: 0/0/1659434058 | size: 0/0/8812 | etag: ""//"9fe69d872cc8436fa1df13283fabdeb9" | checksum: ""//"" | perm: ""//"WDNVCKR" | fileid: ""//"00191501" | inode: 0/0/ | type: CSyncEnums::ItemTypeSkip/CSyncEnums::ItemTypeSkip/CSyncEnums::ItemTypeFile | e2ee: false/false | e2eeMangledName: ""/"" | file lock: not locked//not locked
2022-09-04 16:04:56:943 [ info sync.discovery C:\Users\sysadmin\AppData\Local\Temp\2\windows-11185\client-building\desktop\src\libsync\discovery.cpp:482 ]:    OCC::SyncFileItem::LockStatus::UnlockedItem "" "" OCC::SyncFileItem::LockOwnerType::UserLock "" 0 0
2022-09-04 16:04:56:943 [ debug nextcloud.sync.database.sql C:\Users\sysadmin\AppData\Local\Temp\2\windows-11185\client-building\desktop\src\common/ownsql.h:151 ]    [ OCC::SqlQuery::bindValue ]:    SQL bind 1 "00191501"
2022-09-04 16:04:56:943 [ debug nextcloud.sync.database.sql C:\Users\sysadmin\AppData\Local\Temp\2\windows-11185\client-building\desktop\src\common\ownsql.cpp:295 ]    [ OCC::SqlQuery::exec ]:    SQL exec "SELECT path, inode, modtime, type, md5, fileid, remotePerm, filesize,  ignoredChildrenRemote, contentchecksumtype.name || ':' || contentChecksum, e2eMangledName, isE2eEncrypted,   lock, lockOwnerDisplayName, lockOwnerId, lockType, lockOwnerEditor, lockTime, lockTimeout  FROM metadata  LEFT JOIN checksumtype as contentchecksumtype ON metadata.contentChecksumTypeId == contentchecksumtype.id WHERE fileid=?1"
2022-09-04 16:04:56:943 [ info sync.discovery C:\Users\sysadmin\AppData\Local\Temp\2\windows-11185\client-building\desktop\src\libsync\discovery.cpp:1425 ]:    Discovered "Zhuangzi/innerthree.html" CSyncEnums::CSYNC_INSTRUCTION_NEW OCC::SyncFileItem::Down CSyncEnums::ItemTypeFile
2022-09-04 16:04:56:943 [ debug nextcloud.sync.database.sql C:\Users\sysadmin\AppData\Local\Temp\2\windows-11185\client-building\desktop\src\common/ownsql.h:145 ]    [ OCC::SqlQuery::bindValue ]:    SQL bind 1 "Zhuangzi/innerthree.html"
2022-09-04 16:04:56:943 [ debug nextcloud.sync.database.sql C:\Users\sysadmin\AppData\Local\Temp\2\windows-11185\client-building\desktop\src\common\ownsql.cpp:295 ]    [ OCC::SqlQuery::exec ]:    SQL exec "SELECT lastTryEtag, lastTryModtime, retrycount, errorstring, lastTryTime, ignoreDuration, renameTarget, errorCategory, requestId FROM blacklist WHERE path=?1 COLLATE NOCASE"

I will look into this shortly. (Though I don't see an actual error message in @dwong's log.)