Sandbox unreachable – repeated “Request timeout” / API Error

Hi HappyCapy team,

I am repeatedly encountering a sandbox connection issue in one of my projects.

Error message:

“Request timeout. The sandbox has been unreachable and this request could not be confirmed. Please reconnect and try again.”

The UI also shows:

API Error

Request timeout

This happened multiple times yesterday (Oct 2, 2026), and clicking Continue results in the same error again.

The issue occurred while the agent was running a Bash task related to video processing / FFmpeg. The last visible completed step was:

“Force CFR on inputs and rerun assembly”

After that, the sandbox became unreachable.

I have tried reconnecting / continuing the task, but the same timeout keeps happening.

Could you please check whether the sandbox instance for this project has crashed or become stuck, and whether it can be restarted/recovered without losing the existing project files?

I have attached a screenshot of the error.

Thank you.