Baground nextcloud blank

https://help.nextcloud.com/t/logo-in-top-right-is-blank-login-image-is-blank-cant-seem-to-figure-it-out/13451/14

I have the same problem… appens always when the url is mydomain/index.php/apps/…
but if i go on mydomain/index.php/settings/personal or mydomain/index.php/settings/help logo image is loaded correctly and no errors

i set in config.php:
‘overwriteprotocol’ => ‘https’,
‘overwrite.cli.url’ => ‘https://mydomain’,
problem solved