Unable to find images and preview boxes are grey after updating Lightroom Classic

[Ho Shu Yi]

Since updating Lightroom Classic, I'm unable to import any images with the function stuck at "finding files". Files that have been imported before have grey preview boxes.

I've tried taking out the previews.db file as suggested in this fix but lightroom crashes on startup after with the following error:

I've set the colour profile "sRGB IEC61966-2.1" as default. 

I've tried deleting all of the files and doing a clean install via  Adobe Creative Cloud but the problem remains the same.

[Ho Shu Yi]

Version of the app - 11.1
Platform and OS version - Windows 10 Home

[Ho Shu Yi]

Found the error. Lightroom catalogue was set up on a cloud drive. Moving it to the physical drive solved the issue.

[Per Berntsen]

The recommended procedure in the past has always been to delete the entire Previews.lrdata folder, so I suggest that you try that. The previews will rebuild as you browse folders in Library.