raschy

Could I then also have a few lines from the log, preferably by setting the adapter to 'debug' beforehand.

here is the reason: node: v18.20.8, Please update your system to node v20.x.x

Browser refresh? It actually looks good: deyeidc.0 (2559) Data reception for 4 registersets completed. Perhaps the poll rate of 10 seconds is a bit high.

The next attempt would be to set the instance to log level "all" (=silly) and store a log file here again.

I cannot reproduce this error. If I delete the folder 0.xxxx, the folder is completely recreated the next time valid data is received.

Have you ever tried uninstalling and then reinstalling? Or do you happen to have an ioBroker test installation to hand?

Then I can't think of anything more to say here at the moment. Sorry.

Yes, sure, that's a possibility. However, I would still like to know the reason why the folder is not being created.

No new findings, therefore close.