In multiple usage of {{delete}} or xcontribs, it appears error message like below:
There were MySQL errors at Sat, 18 Apr 2020 18:35:00 +00002mysql_connect(): User 's51362' has exceeded the 'max_user_connections' resource (current value: 10)/data/project/erwin85/public_html/inc/database.class.php467Array ( [host] => s4.labsdb ) . It is possible that this tool won't work right now. If this error message persists please file a bug.

As above.