Google AI Studio Build Mode returns Invalid argument for all prompts in one existing project

Gemini API
1

Subject: Google AI Studio Build Mode returns Invalid argument for all prompts in one existing project

Hello Google AI Studio Support Team,

My existing project, “Remix LIC Premium Reminder Pro”, is experiencing a persistent Build Mode error.

Every prompt, including a simple “Hii” or “Reply only READY”, fails immediately with:

“Invalid argument” – Ran for 0s.

I tested multiple Gemini models, including Gemini Flash variants, but the same error occurs.

Troubleshooting already attempted:

  • Started a new chat inside the existing project.
  • Tested in Chrome Incognito.
  • Tried multiple Gemini models.
  • Tested simple prompts without requesting code changes.
  • Created a separate project named MoneyMate using the same Google account. Its Build Mode works successfully.

The existing project’s Preview still loads, but its Build Agent cannot process any request. GitHub push also reports: “Request contains an invalid argument.”

Please investigate the existing project’s Build Mode / backend configuration and help restore access without deleting or resetting the project.

I can provide screenshots and error IDs privately if required.

Thank you.

1000109208
10001092081080×2392 398 KB

2

Hello Google AI Studio Support Team,

The issue is still unresolved.

My existing project, “Remix LIC Premium Reminder Pro”, continues to return “Invalid argument – Ran for 0s” for every prompt, including simple text prompts like “Hii”.

I have also tested multiple Gemini models and a new chat. My separate MoneyMate project works correctly under the same Google account.

Please investigate and restore Build Agent access for my existing project without deleting or resetting it.

I have downloaded a backup of the project and can provide screenshots and error IDs if required.

Thank you.

3

Hello,

To help us look into this, please share your Applet ID, Project ID, and the error IDs (or error screenshot) using this form: Google AI Developer Forum: Share Details About Your Issue

Please only use this form if your issue is the same as the one in this thread. If it’s different, please start a new post instead.