Hi all, I was constantly running into the same issue, and I finally figured out the cause. In my case, after I manually created some folders and files in the project source, it started throwing the “An internal error has occurred” error, and sometimes I saw it say “Permission Denied”. So, simply put, once I deleted the files and folders I created, it immediately started working fine again. Hope this helps anyone else running into a similar situation.
The issue still persists also on my side. I’m facing it in the Google AI Studio Playground, and even when I use simple short prompts it’s always returning the same “an internal error has occurred” error. And the support is really bad, I have never got any response when reporting bugs. If you’re still facing the issue, like me, you might want to also follow the topic right here: Nano Banana Pro: An internal error has occurred
People are reporting the same bug there as well. If it would be solved, you might get the solution on that topic first.
I think it is some corruption in the chat of an app, because other apps are not affected.
For me it now also says “Gemini 3 Pro Preview Canceled”, on all chats, therfore I cannot edit or refresh it.
And i cant reset the conversation either.
The weird thing that even when I do an app copy, to get rid of my old chat, the new app chats also throws the same “An internal error has occurred” error.
I’m sure it’s not cache or browser related, because even when I run it on another PC I have the same problems. Maybe it is a reverse cache problem?