Photo Upload fail with WebDAV Error Ressource locked

When I‘m on vacation I use my Nextcloud to backup my photos in case my camera gets lost or SD Card broken.

Unfortunately the Nextcloud iOS client is very unreliable in that aspect, at least for me.

When I upload more than one photo I often get a WebDAV error Ressource locked at the end of an upload. The uploads continue to 100% and then I get the error. Afterwards the upload is re-initiated again and again. With mobile devices and limited data plans this leads to problems.

I‘m not sure if this might workaround the problem but giving the user the option to reduce simultaneous uploads to a given number would be a start.

I already cleared oc_file_locks in MySQL table but no success solving this.

Any idea?