Exporting issues

[dan crouch]

I am trying to export a photograph from Photoshop 21.1.3 using my Mac dustbin.
It was working fine yesterday but now when I try to Export as, I get a black screen and can’t export. I can’t see the image I am trying to export, just a blank black page.

If I click on export I get this error ‘No valid asset to export. Please resolve any warnings and try again’

I am new to Photoshop, any advice would be great.