The error is likely related to Replit's environment. You can consider these steps:

-Restart the Replit session or refresh the page, as temporary glitches can cause this issue.

-Create a new project and copy your code into it, as misconfigurations can happen in the environment.

-Check the compiler version by opening the Shell in Replit and running g++ --version.

If there's an issue with the compiler setup, this might help identify it.