[Done v1.5.6] PHP Warning: A non-numeric value encountered... - PHP 7 warnings

[mc12345678]

Change line 58 of the file from:

$level = $level;

To:

$level = (int)$level;

Sorry, more than likely will need to add the above at or around line 58 so that $level will be forced to be an integer. In newer php versions it is/will be possible to cast/expect the value to be an integer, but to maintain the existing backwards compatibility the above was the way chosen.