PHPUnit 5.4.6 by Sebastian Bergmann and contributors.
Fatal error: Class 'GuzzleHttp\Tests\Psr7\HasToString' not found in
C:\Temp\phpunit1\vendor\guzzlehttp\psr7\tests\FunctionsTest.php on line 389
This error appears when I run my test plan.
If I run 'phpunit tests' from the command line from the same working folder set in my test plan, it works as expected.
If I remove the guzzle component, the test plan works as expected.
Any help is appreciated!