I have read the topic similar but did not find the correct answer I think.
I get the below message every few seconds and have no idea were they com from.
It is just cluttering up the log file.
‘Login attempt or request with invalid authentication from 127.0.0.1’
how can I get this stopped?
my range is completely different and this is just a local address form the PI I think.
Yes that is the local loopback address on the pi.
You might have an addon that is not configured to authenticate correctly. Try disabling any addons you have one by one and see if you notice a difference.
could not find what caused it but have it blocked now. At least the log file does not get too big.
I guess you’ll find something broken sooner or later. 
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