Kann nichts in vps installieren (migriert wp)

Ich erhalte diesen Fehler in meiner WordPress_http_error.log

Stack trace: #0 /var/www/html/wp-admin/includes/class-wp-upgrader-skin.php(95): request_filesystem_credentials('update.php?acti...', 'ftpext', false, '/var/www/h$ #1 /var/www/html/wp-admin/includes/class-wp-upgrader.php(196): WP_Upgrader_Skin->request_filesystem_credentials(false, '/var/www/html/w...', false) #2 /var/www/html/wp-admin/includes/class-wp-upgrader.php(691): WP_Upgrader->fs_connect(Array) #3 /var/www/html/wp-admin/includes/class-plugin-upgrader.php(186): WP_Upgrader->run(Array) #4 /var/www/html/wp-admin/update.php(65): Plugin_Upgrader->upgrade('cont 

Und ich kann wp / plugins nicht aktualisieren. Irgendeine Hilfe?

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