đã tạo được test case của createUser

vendor/php-webdriver/webdriver/lib/Exception/InvalidElementStateException.php

@@ -0,0 +1,11 @@
+<?php
+
+namespace Facebook\WebDriver\Exception;
+
+/**
+ * A command could not be completed because the element is in an invalid state, e.g. attempting to clear an element
+ * that isn’t both editable and resettable.
+ */
+class InvalidElementStateException extends WebDriverException
+{
+}