The Agent execution terminated due to error message is a generic error that occurs when the background runner experiences an unhandled failure (such as model quota limits, context limits, or unexpected runner exceptions). If you are still experiencing the issue, could you please share the Trajectory ID shown in your UI so we can diagnose the exact root cause?
I was using just yesterday and today when all of suden, when I tried another question, this error showed up. But I did solve the problem going to View > Command Palette > Reset Onboarding. Now everything is working again.
Version info
Antigravity IDE Version: 2.5.5
VSCode OSS Version: 1.107.0 (user setup)
Commit: ecfbad74d93962fc8ca485d93ab9b4f***
Date: 2026-08-13T08:37:22.547Z
Electron: 39.2.3
Chromium: 142.0.7444.175
Node.js: 22.21.1
V8: 14.2.231.21-electron.0
OS: Windows_NT x64 10.0.26200
Language Server CL: 963923152