Hi, Roger. I'll be happy to assist you today.
Sorry to know you're experiencing this issue while uninstalling PowerToys.
If the app was installed from Microsoft Store, please use the following method to uninstall it. Open PowerShell and paste the following commands:
Get-AppXPackage *PowerToys* | Reset-AppxPackage
Get-AppXPackage *PowerToys* | Remove-Appxpackage
After that, the app must be removed. If you need anything else or this procedure doesn't fix the issue, please let me know.