Updated to Catalina and Lightroom 6 won't open

[jillb20472908]

Does anyone have advice? I'm desperate to access work that hasn't been exported from Lightroom 6, but it won't open after updating to Catalina on my Mac.

[Axel Matt]

In a first step please try resetting the preferences of Lightroom Classic:   https://helpx.adobe.com/lightroom-classic/help/setting-preferences-lightroom.html

It's recommended to backup your preferences before you reset the preferences to the default settings: 

https://helpx.adobe.com/lightroom-classic/kb/preference-file-and-other-file-locations.html