When ct email is utilizes invite* a gmail address) thered box a[[ears staing message is a required argument

when ct email is utilizes to invite* to wAITING room ( gmail address) today, for the first time… a red message appears stating" message required for argument…
I HAVE NO IDEA WHAT THAT MEANS, NEVER APPEARED BEFORE…

Yes…that is happening to me too…is this a problem that needs to be addressed?

All of a sudden this is happening to me too. Were you able to resolve it?