Notice: Undefined variable: coverage in C:\wamp\www\mantisbt\vendor\phpunit\php-code-coverage\scripts\auto_append.php on line 2

Fatal error: Uncaught Error: Call to a member function stop() on null in C:\wamp\www\mantisbt\vendor\phpunit\php-code-coverage\scripts\auto_append.php:2 Stack trace: #0 {main} thrown in C:\wamp\www\mantisbt\vendor\phpunit\php-code-coverage\scripts\auto_append.php on line 2