Fatal error: Uncaught Error: Class 'tests\DatabaseTestCase' not found in /home/mpolsk5/public_html/visibilityfuel.com/vendor/creocoder/yii2-nested-sets/tests/NestedSetsBehaviorTest.php:19
Stack trace:
#0 {main}
thrown in /home/mpolsk5/public_html/visibilityfuel.com/vendor/creocoder/yii2-nested-sets/tests/NestedSetsBehaviorTest.php on line 19