While working on WHMCS I was not able to generate tickets

I found out issue was due to mysql being in strict mode

I tried disabling mysql strict mode  by adding entries in  /etc/my.cnf

sql_mode=””

However it didnt work out.

I have found that there is a /usr/my.cnf file that is enabling strict mode on  server.

This file contained the following:

====
sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES
====

I removed the STRICT_TRANS_TABLES option and saved the file. All that is left is to restart the MySQL server. You can do this at your convenience with the following command:

====
/scripts/restartsrv_mysql
====

Once it is restarted, strict mode should be disabled.