Unable to USe Denoise (Suddenly; No Event)

Suddenly, No Event - Unable to Use Denoise on any new or previously uploaded images. 

Troubleshooting Steps

• Creative Cloud > Check for Updates - None Available (Lightroom Classic - 15.3.1) + Updated Today (Camera Raw - 18.4 )
• Uninstalled Lightroom Classic + Reinstalled Lightroom Classic (Issue Persists) 
• Menu > Preferences > Performance >  Use Graphics Processor (Off) > Restart Computer (Issue Persists) 
• Menu > Preferences > Performance > Catalog Settings > Optimize Catalog > Restart Computer (Issue Persists)