Google Calendar returning "trying to refresh token due to expiry"

I'm using the Calendar In node from node-red-node-google, and maybe once or twice a day I get multiple "trying to refresh token due to expiry" messages. I'm guessing it's one message for each node. Should I expect this, or have I configured something incorrectly? I'm running Node Red under Docker as an add-on to hass.io.
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yes you should expect this

Ok thanks. It would be nice to be able to turn it off so it doesn't appear in the debug window if it's normal. Beggars can't be choosers though.