ERROR Unable to submit request because it must include at least one parts field

Hi, I usually get error as following.

Any one know why?

  • Mode: Gemini-2.0-flash-thinking-exp-01-21

  • Vertex AI

ERROR Unable to submit request because it must include at least one parts field, which describes the prompt input.

The same thing happens to us directly from the API

Hi folks,

It seems it’s not detecting the prompt properly. I looks an intermittent issue, Can you start a new chat and check if it’s still happening.