Solved: This happens because when inserting an new row and some columns are not mentioned in the INSERT query, they are filled up as NULL by default, or maybe you are actually inserting a value of NULL, but for this to work your column must be set to allow NULL, other wise it will crash,
2018-11-13 Eduardo Ponce de Leon
MySQL / Maria DB Upgrade - Strict Mode is enabled by default, how to go back if your web applications start to crash
2018-05-11 Eduardo
This is a simple tutorial on how to Insert values into a table that comes from another table. (MySQL)