Unknown error (server denied request)

[GongT]

(the red line is "server deny access, [click here] to ensure you have permission")

I can login from webpage with no error.

I only saw a nginx access log:

• PROPFIND https://nextcloud.service.gongt.me:59443/remote.php/webdav/, STATUS 401, 311 BYTES RESPONSE FROM unix:/var/run/socket/php-fpm.nextcloud.sock

php & nextcloud log file do not print anything.

It's there any client log ?