Lightroom won't open

[chrisw63857]

My lightroom closed unexpectedly when exporting images.  I restarted my computer and when I tried to reopen lightroom I am getting this message: The Lightroom catalog named "lightroom catalog-v10" cannot be opened because another application already has it opened.

[GoldingD]

see: https://helpx.adobe.com/lightroom-classic/kb/lightroom-error-catalog-cannot-be-opened-lrcat-lock.htm...