If the strict mode is turned on, some features might not work on your panel. You need to disable this.
For a temporary solution, please login as root to your WHM, navigate to PHPMYAdmin and run
SET GLOBAL sql_mode=(SELECT REPLACE(@@sql_mode,’ONLY_FULL_GROUP_BY’,”));
For a permanent solution, you would need to edit the ‘my.cnf’ file
Strict Mode Disabled: