I recently had the problem that the home assistant entities are no longer available. See log in the appendix. Does somebody has any idea?
From the information provided I guess this is a light connected via KNX? Normally these “became unavailable” messages appear when HA is not longer able to communicate with the device. And then a few seconds later the state is restored because HA could reconnect.
In your case with KNX, is there a chance that your system is overloaded and cannot process all those messages in time?
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Any errors in your logs?
Please use copy and paste and code tags here (```) instead of screenshots (especially when they truncate the messages).