No Photo upload with autoupload


i have Nextcloud on a local Homeserver.
I also have on my Android Mobile Nextcloud app!

i do connect and got the structure, so far no problem!

But it will not upload my Picture Automatic (no Autoupload)

Also when i press in the directorie and would like to open a PDF file it give a error downloading.

Where to find the problem, should there be a spezial Logfile to find some error?

have a nice day

Same problem here.