The author of MMM-MktIndex has updated a file that will get the module working again.
Go to this thread: https://github.com/thess/MMM-MktIndex/issues/2

@sdetweil Thanks for the fix, now it is displayed correctly.

Hello sdetweil, for you as experts it shouldn’t be a problem to start the Docker, as a beginner I can only do a limited amount with the instructions. When I start the Docker via the Shell I get the following error message: container-station/docker: Error response from daemon: driver failed programming external connectivity on endpoint magic_mirror (6372ebe4277aea6a53fc9129dcfe8c145b3010217241886e1ec5eb7ef103b8b1): listen tcp 0.0.0.0:80: bind: address already in use.

When I call the Docker via the container station, the MagicMirror server is started, but I cannot connect to the web browser.
“ERR_CONNECTION_REFUSED”

I will read about Container Station, Docker in the next few days, maybe I’ll still get it to work.

Hello AxLED,
Thanks for your offer, I know your module and have already installed it on my 2nd mirror. For streaming your module is great, but I use the mirrors only for news / status messages and not for the entertainment. Through your module, I first came up with the idea that you could view the timer list on MagicMirror. I have already shown the Timer Webif with iFrame, only the view is not very nice, it just does not look professional. I’m an absolute beginner in programming Python.