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@BrotherDan give this a try
https://forum.magicmirror.builders/topic/15778/fix-for-black-screen-in-2-16-and-later
I got it working on my mirror just fine
@swvalenti
Thanks for your advice. The package.json is present.
BrotherDan
@BrotherDan
An update… This may be symptomatic of a larger issue. I see the same action when I try to add a different module…Ideas?
…Issue resolved… Operator error. I needed to make certain I installed the needed dependencies in the MMM-network-signal folder…