Problem: I was experiencing persistent connection errors where the Antigravity client could not connect to the local server (Error: connect ECONNREFUSED 127.0.0.1:57078). The extension would fail to initialize or get stuck in a “starting” state.
Solution: The issue was caused by corrupted local configuration or cache files. Deleting the application data folder forced the extension to perform a clean restart.
Steps to fix:
-
Close VS Code and the Antigravity standalone app.
-
Press
Win + R, type%appdata%, and hit Enter. -
Locate the folder named
antigravity(or the folder associated with the Antigravity extension). -
Delete this folder entirely.
-
Restart your computer (to ensure the port
57078is fully released). -
Launch Antigravity again. It will recreate the necessary files and connect successfully.
Explanation: This error often occurs when the internal server process crashes without releasing the local port, or when a configuration update becomes out of sync. Clearing the %appdata% folder acts as a “hard reset” for the extension’s environment.
