Issues with webDAV on Android; unable to sync

Good afternoon,

I recently set up DAV on my android phone to connect to my nextcloud instance with the intent of connecting my calendar. Currently I am running into issues connecting, and am getting the following logs when it attempts to sync:

[webdav] Fatal: OCA\DAV\Connector\Sabre\Exception\InvalidPath: File name contains at least one invalid character at <<closure>>

0. /snap/nextcloud/23171/htdocs/3rdparty/sabre/dav/lib/DAV/Tree.php line 80
   OCA\DAV\Connector\Sabre\Directory->getChild("IMG_20200914_143330\\.jpg")
1. /snap/nextcloud/23171/htdocs/3rdparty/sabre/dav/lib/DAV/Server.php line 758
   Sabre\DAV\Tree->getNodeForPath("files/strongtha ... g")
2. /snap/nextcloud/23171/htdocs/3rdparty/sabre/dav/lib/DAV/CorePlugin.php line 619
   Sabre\DAV\Server->getCopyAndMoveInfo(Sabre\HTTP\Request {})
3. /snap/nextcloud/23171/htdocs/3rdparty/sabre/event/lib/WildcardEmitterTrait.php line 89
   Sabre\DAV\CorePlugin->httpMove(Sabre\HTTP\Request {}, Sabre\HTTP\Response {})
4. /snap/nextcloud/23171/htdocs/3rdparty/sabre/dav/lib/DAV/Server.php line 474
   Sabre\DAV\Server->emit("method:MOVE", [Sabre\HTTP\Requ ... }])
5. /snap/nextcloud/23171/htdocs/3rdparty/sabre/dav/lib/DAV/Server.php line 251
   Sabre\DAV\Server->invokeMethod(Sabre\HTTP\Request {}, Sabre\HTTP\Response {})
6. /snap/nextcloud/23171/htdocs/3rdparty/sabre/dav/lib/DAV/Server.php line 319
   Sabre\DAV\Server->start()
7. /snap/nextcloud/23171/htdocs/apps/dav/lib/Server.php line 320
   Sabre\DAV\Server->exec()
8. /snap/nextcloud/23171/htdocs/apps/dav/appinfo/v2/remote.php line 35
   OCA\DAV\Server->exec()
9. /snap/nextcloud/23171/htdocs/remote.php line 167
   require_once("/snap/nextcloud ... p")

MOVE /remote.php/dav/uploads/strongthany/6d57ac3241d0964f68eb77e50666d414/.file
from 96.3.151.219 by strongthany at 2020-09-29T17:04:43+00:00

Phone:
Fairphone 3 running Android 10
Nextcloud app version 3.13.1
DAV client: DAVx5 version 3.3.1-ose

Server:
Nextcloud 19.0.3 snap on Ubuntu 20.04 LTS

Please let me know if there is any other information I can provide to help!