无法在Symfony 3.4中捕获异常

I am using symfony 3.4. I am not able to catch the Exception. Please help me out.

try{
        $a= 5/0;
}catch (\Exception $e){
        print_r('Exception Caught...');
}

error messsage: The server returned a

500 Internal Server Error

Division by zero is a Fatal Error, not an exception that can be caught. You could however use the set_error_handler function to create an error handler that throws an exception instead:

Place the following code anywhere before your error causing code:

set_error_handler(function ($errno, $errstr) {
    throw new \Exception('Fatal Error: '.$errstr);
});