Okay. My guess is that you can reproduce this from the command-line by running:
sfdx force:project:create -d <parentDirPath> -n <projectName> --json
I would recommend that you completely uninstall the Salesforce CLI and reinstall it. I've seen a large number of issues from invalid/corrupt CLI installs of late, particularly those that have been upgraded in-place repeatedly, that are resolved by completely uninstalling the CLI and reinstalling it fresh. Please make sure to remove all cache directories, etc., as documented here:
Regards,
Scott Wells