Issue installing ceedling in Windows 11

I have tried to install ceedling for Windows 11. But come across this error:

Failed to load C:/ProgramData/gemrc, (<unknown>): control characters are not allowed at line 1 column 1

I installed Ruby 3.1.3.1 (x64) from here https://rubyinstaller.org/downloads/ Then I ran:

gem install ceedling

Any ideas on how to install ceedling correctly would be appreciated.

That error is telling you that the file C:\ProgramData\gemrc has invalid data in it at line 1, column 1. You have most likely edited this file improperly when installing Ruby because this is a default file with a default configuration that should have been created when you installed Ruby.

You should try these steps in order:

1. Inspect the file to see what invalid characters exist at that position, comparing it to some default gemrc files, and remove any invalid characters, or:
2. Rename the file and try again, or:
3. Remove the file and reinstall Ruby from scratch so that the file is created from scratch