Blocked access to external URL http://nonexistent-origin.localhost%7D:8800/

FAIL XmlHttpRequest: The send() method: Throw a "throw an "NetworkError" exception when Network error happens (synchronous flag is set) assert_throws: function "function ()
            {
                xhr.send("Test ..." threw object "AbortError (DOM Exception 20): The operation was aborted." that is not a DOMException NetworkError: property "code" is equal to 20, expected 19