Periodic CONNECTION_ERRORs in Diagnostics - Failed to send TCP (read_write) to 127.0.0.1#5335

I don't think you have to do anything if the logs do not show anything unusual. This may be completely normal behavior in your particular case. These connection warning have only just recently been added and things have likely always been like that, you just didn't know.

I will probably silence this new warning in case there is no actual error to report. Thanks for bringing this up!