[cflsystems]

These are notices not even warnings. So you can ignore them. If you want them to go away you will have to assign a value no matter what.

So for example for the $p_query you need to find where its value is assigned somewhere before this line 524 and check if value is not assign and you can do something like

$p_query = '';

It will highly depend on the code there what it does and how it does it to decide how to assign the variable value.