What does failed to synthesize mean?

There are a few reasons why this error would occur.

  • If your account has run out of Voice Generation Time.
  • If your payment has failed and your plan has not been renewed.
  • If an invalid IPA has been added to a particular word.
  • If an unrecognized character is present in your script. (Recommend: Paste text as plain text using Ctrl/Cmd + Shift + V)