Hi scalablepower,
Thanks for using Apple Support Communities! I see you're having an issue with your Mac and accessing the Storage info, and I'd like to help out.
The inability to access About this Mac > Storage and the process you described look to be related.
Before doing any troubleshooting, you'll want to make sure you have your Mac backed up. Back up your Mac
Start up your Mac in safe mode, as that will do some system checks and can fix some issues. Use safe mode to isolate issues with your Mac
Keep in mind, that safe mode may take much longer to start up, as it runs though its system checks. Plus, you may notice some display differences, such as lines or flashing. This is all expected, and will go back to normal once restarted.
Check if you can access About this Mac > Storage while in safe mode, and again after restarting normally.
If you're still having issues, the next step is to start up in macOS Recovery. About macOS Recovery
Select Disk Utility and run First Aid. If something was found and repaired, then restart normally and test.
If nothing was found, then select to Reinstall macOS, without erasing your Mac.
If you are still not able to resolve the issue, then I'd recommend contacting Apple Support.
Take care!