same thing is happening with me. Have you figured it out yet please reply.
Check the URL that you're typing into your web browser, you should have a ":" between 127.0.0.1 and 8888. You have it as 127.0.0.1.8888, it should be 127.0.0.1:8888
I checked it and it was ok. I did not forgot the :. But still it won't work.
getting the same issue anyone can help , not getting any support from web search.