private function disabledFunctionCheck()
    {
        $functions = [
            'exec'
        ];
        // Functions needed by symfony process
        foreach($functions as $function){
            if (!function_exists($function)) {
                $this->console->error('Function  "'.$function.'" is required. Is it disabled in php.ini?');
                $this->errors = true;
            }
        }
    }