Anomaly that appears on the page of my sitemap

Tags: #<Tag:0x00007f2fc0642660>

"Not connected: waiting for an available connection"

  • Hardware: Raspberry PI 3 B+ - SD 64 G0
  • OS: Raspbian stretch
  • Java Runtime Environment: 1.8.0.212
  • openHAB version: 2.4

I have an indication: “Not connected: waiting for an available connection” at each change of a switch that appears a few seconds and then disappears and no abnormal message in the console

What’s the problem ??
Thank you

Check your logs!
My first guess is that openHAB is struggling with something and is there for unable to respond to the request from the device you are using.