Hi !
I am running egroupware-docker version 26.2.20260224
On my dev instance I have successfully mounted my NAS (Synology) with webdav protocol with the filemanager parameters (very useful feature btw ! especially with collabora online )
I can create and delete files , upload and delete directory. 
But when I try to create a new directory, i got this error :

I want to debug this but i have no logs generated by the “create directory” action in : docker logs -f egroupware-nginx
I did not found any similar problem on this forum so, may i request some advice to help me debugging this ?
Regards,
John