Missing paths with WifiManager.h on ESP32 w/ Arduino

Hi. Fish here. Having the same issue with WiFiManager but when I type
" pio pkg update -g -p espressif32" I get the following message:
“UnknownPackageError: Could not find the package with ‘espressif32.’ requirements for your system ‘windows_amd64’”

any idea what that means?

Thanks!
Fish