Text to speech limit?

When I try to put in a very long body of text into one side of a note and activate the text to speech function, an error message informs me:

No text-to-speech language available.

If I cut the text down, it’ll work. If I try putting in the text I cut out into a separate note, it works. So it doesn’t seem to be a specific character that might be messing it up, just the length. Is there a way to work around this other than splitting it up?