"an error was returned by the audio analysis service."

[Andrea Z.]

I keep having this error both in unit 5 and 6, both in last speaking exercise (10) and in last test exercise (12).
It is very very very very frustrating!
I tried doing it even ten time but it keeps reporting me that error!
It does it only in these long speaking exercises.
It does fine with short sentences speaking exercises.
It's taking me away and wasting plenty of time.
Can I have this fixed, please?