# Error "no implicit conversion of Array into String" when using Gemini AI analysis on posts with images

**URL:** <https://meta.discourse.org/t/error-no-implicit-conversion-of-array-into-string-when-using-gemini-ai-analysis-on-posts-with-images/372015>\
**Category:** Bug\
**Tags:** ai\
**Created:** [June 27, 2025, 3:22pm UTC](https://meta.discourse.org/t/error-no-implicit-conversion-of-array-into-string-when-using-gemini-ai-analysis-on-posts-with-images/372015 "2025-06-27T15:22:35Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![hel\_Sinki](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/hel_sinki/32/525916_2.png) [@hel\_Sinki](https://meta.discourse.org/u/hel_Sinki)\
**Post date:** [June 28, 2025, 12:40am UTC](https://meta.discourse.org/t/error-no-implicit-conversion-of-array-into-string-when-using-gemini-ai-analysis-on-posts-with-images/372015/2 "2025-06-28T00:40:51Z")

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![The image displays an error message indicating an invalid JSON payload received from a system, with detailed error information regarding an unknown field and a non-repeating proto field. (Captioned by AI)](https://global.discourse-cdn.com/meta/original/4X/7/6/f/76fe9e3bbcdc3f83320b61ba1b10202544e5ac24.jpeg)

When I include an image in a public post, Gemini returns no reply,

when I send it via private message, the AI reports the error shown above.

The same behavior occurs across multiple AI models.

Only the default “creative” bot produces the above error; other custom AI bot can successfully recognize the image and respond normally.

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_[View the full topic](https://meta.discourse.org/t/error-no-implicit-conversion-of-array-into-string-when-using-gemini-ai-analysis-on-posts-with-images/372015)._