The error message "Extension activation failed" in Visual Studio Code (VSCode) usually means that there was an issue with the installation or loading of a specific extension. Here are some steps you can follow to troubleshoot and potentially fix the issue:
1. **Toggle Developer Tools**:
- Press `Ctrl + Shift + I` (or `Cmd + Option + I` on macOS) to open Developer Tools. Look at the console for any error messages related to the extension.