A writing tool, such as a draft, edit, review or plan, did not get an answer. Requests that fail are not counted against your daily limit.
You may also see:
"The AI returned an empty response. Please try again."
"The AI did not return usable options. Please try again." (also ideas, a review, a prompt or a plan)
"The suggestion could not be generated."
Generation failed in the draft preview.
What to do
Wait a moment and tap Try again, Regenerate or the original button.
For very long sources, import a shorter part.
Check your connection if it happens across several tools.