Error on fetch()

Content

Hi

I have the following: 

$sup = RNCPHP\Contact::fetch((int)$supervisor);

This does an error. I have to do the following to workaround:

try {

$sup = RNCPHP\Contact::fetch((int)$supervisor);

}

catch ( \Exception $err ){

$sup = null;

}

Why can I not just do something like the following instead:

if (empty($sup)) {

$sup = null;

}

I can do it when I'm issuing this command:

$co = RNCPHP\WMP\the_main::first("type=2634 AND Contact=".$uid);

 

Any advice?