I have updated all my tasmota switches to 8.3.1 now, but no difference.
Since the error occurs, just after installing the enocean node (without using the enocean or tasmota node), there seems no correlation.
I will have to go deeper in MQTT and learn how to read the state of a smart plug over a MQTT command. I have already contacted @Maximus1, because in german it's much easier for me.
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