Error50200: Programmable Chat: User not foundPositive FeedbackNegative FeedbackTwilio Chat DocumentationChat Descriptiondescription page anchorPositive FeedbackNegative Feedback Possible causespossible-causes page anchorPositive FeedbackNegative Feedback Specified User does not exist. Possible solutionspossible-solutions page anchorPositive FeedbackNegative Feedback Confirm a valid User is being passed in request.