Cannot edit in read-only editor VS Code

1. Go to File > Preference > Settings then
2. type: run code and scroll down until you see code-runner: Run in terminal, There will be multiple options called “code-runner”. In that you can find the option mentioned below.
3. just check “Whether to run code in integrated terminal” and
4. restart vscode.

For Mac users, it is Code > Preference > Settings.