Why not connect 'SaunterPHP_Framework_Exception'

[StasToken]

Hi all I'm trying to run the test described in the file ProfileTest.php folder test
And get this error:

PHPUnit 5.5.1 by Sebastian Bergmann and contributors.

E 1 / 1 (100%)
Time: 301 ms, Memory: 8.00MB
There was 1 error:

1. ProfileTest::testProfileExists
   Error: Class 'SaunterPHP_Framework_Exception' not found
   /home/PHPWebDriver/WebDriverFirefoxProfile.php:43
   /home/PHPWebDriver/WebDriver.php:49
   /home/ProfTiber/php-webdriver/test/ProfileTest.php:15
   ERRORS!
   Tests: 1, Assertions: 0, Errors: 1.

Tell me what can be the error? All banal is excluded...