MySQL Strict Mode Issue
MySQL 5.7 and above, "SQL MODE" definitions, some commands to prevent the operation of the software is found. These should be removed from the SQL MODE definition and updated as follows.
For the solution;
1) Open the /etc/my.cnf file by accessing your server as root via SSH or SFTP. If you do not have root access, this should be done by your hosting service provider.
2) At the bottom of the opened file, add and save the sql_mode="NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION" definition.
3) Restart your MySQL server.