Disable error reporting entirely in Laravel production?

I would like to disable error reporting entirely on production, because we have some very old code we still need to fix but for now does work (yes I don't like it either). We cannot fix everything in a few days, so we need to just supress the warnings and exceptions like we always did.

tried

APP_DEBUG=false

APP_LOG_LEVEL=emergency

display_errors(false);
set_error_handler(null);
set_exception_handler(null);

But it still shows an ErrorException

Undefined variable: script_name_vars_def

I know I can fix this warning very easy, but there are many, many more of these errors and we need to use Laravel routing now. Fix the problems later.

via Chebli Mohamed