Unable to access Plesk: /usr/local/psa/admin/logs/panel.log cannot be opened with mode “a” Cause Wrong ownerships for the /var/log/plesk/ directory or /var/log/plesk/panel.log file. Resolution Log into the the server via SSH. Execute the commands below one by one to set proper ownerships for /var/log/plesk/ directory: # chmod 0750/var/log/plesk/ # chown psaadm:root /var/log/plesk/ Run the following commands to set correct ownerships for the /var/log/plesk/panel.log file: # chmod 0640 /var/log/plesk/panel.log # chown… Continue reading Plesk Panel Permissions Unable to access Plesk: /usr/local/psa/admin/logs/panel.log cannot be opened with mode “a”