Hi guys, i have a problem when i run phpunit, can sombody help me? :" : Hy guys, i have a problem when i run PHPUNIT in my terminal...I`m just a beginner and i need some help :\

  [1]devel@manjaro1|0|16:41:28|~ > cd Projects/forum
    
    [2]devel@manjaro1|0|16:41:34|~/Projects/forum > phpunit
    PHP Fatal error:  Uncaught PHPUnit_Framework_Exception: Neither ".php" nor ".php" could be opened. in /opt/lampp/lib/php/PHPUnit/Util/Skeleton/Test.php:100
    Stack trace:`enter code here`
    #0 /opt/lampp/lib/php/PHPUnit/TextUI/Command.php(152): PHPUnit_Util_Skeleton_Test->__construct('', '')
    #1 /opt/lampp/lib/php/PHPUnit/TextUI/Command.php(126): PHPUnit_TextUI_Command->run(Array, true)
    #2 /opt/lampp/bin/phpunit(46): PHPUnit_TextUI_Command::main()
    #3 {main}
      thrown in /opt/lampp/lib/php/PHPUnit/Util/Skeleton/Test.php on line 100
    
    Fatal error: Uncaught PHPUnit_Framework_Exception: Neither ".php" nor ".php" could be opened. in /opt/lampp/lib/php/PHPUnit/Util/Skeleton/Test.php:100
    Stack trace:
    #0 /opt/lampp/lib/php/PHPUnit/TextUI/Command.php(152): PHPUnit_Util_Skeleton_Test->__construct('', '')
    #1 /opt/lampp/lib/php/PHPUnit/TextUI/Command.php(126): PHPUnit_TextUI_Command->run(Array, true)
    #2 /opt/lampp/bin/phpunit(46): PHPUnit_TextUI_Command::main()
    #3 {main}
      thrown in /opt/lampp/lib/php/PHPUnit/Util/Skeleton/Test.php on line 100

