I have just received an email from the TfL Open Data and am sharing it for every bodies information, etc:

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As a registered user on our Open Data portal, there is a possibility you may be using some of our open data resources that we will need to change.

Important: if you are using the TfL Open Data feeds mentioned below, you will need to make updates to apps using these:

1. Legacy Trackernet and ESUI feeds - re-platforming (hosted on cloud.tfl.gov.uk)
   An ‘ALERT’ post on our Tech Forum containing full details about this change/timescales, is available here.

2. Tube Status Widget - to be decommissioned on Thursday 4 July 2024
   An ‘ALERT’ post on our Tech Forum containing full details about this change/alternative options, is available here.

If you have any questions or comments about either of these TfL Open Data changes, please add a comment to a relevant Tech Forum post and we will try to help.

Yours sincerely,

TfL Open Data Team

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Hopefully the form links have copied through ok.

Best regards
N

@sdetweil

Yes and no:
Yes - it did not give any error message.
No - it did not install the folder and file.

To recap:
I did a new install using the bash auto install script, but for whatever reason the node_helper sub-folder and index.js file were not installed.
Running the git checkout command similarly did not install the sub-folder and file (as the sub-folder and file were not originally installed, it seems logical to me that the git checkout command would not ‘reinstall’ them).
Installed the missing sub-folder and file manually.
Re-started with “pm2 restart mm”.

I guess the pertinent question is why the original install exercise did not include the node_helper sub-folder and index.js file???

@sdetweil

I am not very familiar with the various git commands beyond ‘clone’, but as @jasaronii said above, that git checkout command did nothing, hence manual approach.

But thanks for the guess - inspired and very helpful.

N.

@Jasaronii

I had a similar issue following a reinstall on a Pi 3B, where known good module configurations simply gave a black screen (though the sample config file did initially work but then gave the same black screen after other modules were installed).

I was also missing ‘node_helper’ folder and ‘index.js’ file as you describe.

Manually installed the ‘node_helper’ folder and copied in the ‘index.js’ file (from the github page https://github.com/MichMich/MagicMirror/blob/master/modules/node_modules/node_helper/index.js).

Restarted and now all good. :-)