Can't download or copy any file in specific folder

Using the docker image nextcloud:18.0.1-fpm-alpine

Please help, I have a few thousand jpgs in one folder I can view just fine in the Android app and in the web interface, but can’t actually do anything with.

When trying to download in Firefox:

Trying to copy, a message pops up that says Could not copy "image.jpg"

In Android client, I get a notification saying malformed server configuration when trying to download.

Admin log gives me this:
[webdav] Fatal: Sabre\DAV\Exception\ServiceUnavailable: Encryption not ready: Can not decrypt this file, probably this is a shared file. Please ask the file owner to reshare the file with you. at <>

 0. /var/www/html/apps/dav/lib/Connector/Sabre/File.php line 244
    OCA\DAV\Connector\Sabre\File->convertToSabreException(OC\Encryption\Ex ... {})
 1. /var/www/html/apps/dav/lib/Connector/Sabre/Directory.php line 156
 2. /var/www/html/3rdparty/sabre/dav/lib/DAV/Tree.php line 316
    OCA\DAV\Connector\Sabre\Directory->createFile("image.jpg", null)
 3. /var/www/html/3rdparty/sabre/dav/lib/DAV/Tree.php line 130
    Sabre\DAV\Tree->copyNode(OCA\DAV\Connector\Sabre\File {}, OCA\DAV\Connector\Sabre\Directory {}, "image.jpg")
 4. /var/www/html/3rdparty/sabre/dav/lib/DAV/CorePlugin.php line 684
    Sabre\DAV\Tree->copy("files/user/Pa ... g", "files/user/Pa ... g")
 5. <<closure>>
    Sabre\DAV\CorePlugin->httpCopy(Sabre\HTTP\Reque ... "}, Sabre\HTTP\Response {})
 6. /var/www/html/3rdparty/sabre/event/lib/EventEmitterTrait.php line 105
    call_user_func_array([Sabre\DAV\CorePlugin {},"httpCopy"], [Sabre\HTTP\Requ ... }])
 7. /var/www/html/3rdparty/sabre/dav/lib/DAV/Server.php line 479
    Sabre\Event\EventEmitter->emit("method:COPY", [Sabre\HTTP\Requ ... }])
 8. /var/www/html/3rdparty/sabre/dav/lib/DAV/Server.php line 254
    Sabre\DAV\Server->invokeMethod(Sabre\HTTP\Reque ... "}, Sabre\HTTP\Response {})
 9. /var/www/html/apps/dav/lib/Server.php line 319
10. /var/www/html/apps/dav/appinfo/v2/remote.php line 35
11. /var/www/html/remote.php line 165
    require_once("/var/www/html/a ... p")

COPY /remote.php/dav/files/user/path/image.jpg
from <SAMPLE IP ADDRESS> by user at 2020-03-04T18:45:46+00:00

The folder is not shared, and I am the owner.
I’ve tried occ encryption:decrypt-all before, but it did seemingly nothing, never even started decrypting. the terminal just stayed blank after running the command…

This happens regardless of encryption being turned on or off