The errorHandler class suppresses output of custom MyBB error types

[Devilshakerz]

It probably makes sense to only check for PHP's inbuilt error types (so as in the second snippet), especially if MyBB errors that should be fatal may be accidentally left ignored without terminating execution.

For MyBB errors specifically, there should be better control with catchable database exceptions, and error handler options - both can be extended if needed.