Hi,
You cannot change the error message, as it is hard-coded in the MediaRecorder element. What you are doing is create a new trial, and printing a Text element in that trial depending on whether the upload succeeded or failed (note that the trial needs to come after the upload attempt for uploadRecordingsError to be set)
You can change/set the consent text in the InitiateRecorder command, but you cannot omit that trial, because it is when the browser requests access to the recording device: without it it would simply be impossible to record anything
Jeremy