Update to 10.0, but can not upload or create file

I update to 10.1, but seems there is mistake. can you help me?

Please check permissions of the Nextcloud folder (also your data folder)

but I use the same server for nextcloud 9.053 it’s Ok at that time

do ls -la /path/to/your/nextcloud/
what is the user/group?

but I use the same server for nextcloud 9.053 it’s Ok at that time

Yes, but when you upgraded, you may have accidentally given different ownership/permissions to the new files.

It’s OK now, thanks for your help

It’s OK now, thanks for the help

OK, glad it’s working for you. What ended up being the solution?

My friend know VPS very well, and he helped me. He said the permission problem as you said

Ok, thanks for letting us know. I’ve marked the appropriate thread as the solution for anyone else having this problem. Thanks for helping out!