I’d be happy to help you troubleshoot this issue, but I need more details to investigate. Can you tell me which Google Cloud product you’re having an issue with? Also, can you share what specific action led to this error or whether it’s happening consistently?
Based on the error code (500121) and the screenshot you’ve shared, it looks like you’re having an issue with the settings of your MacBook. My support is only limited to Google Cloud products and services, but if you need help troubleshooting your Apple device I recommend reaching out to Apple Support or reposting this on the Mac Community.