Hi everyone!
Barcode column is not showing image and displaying error message!
Anyone knows why?

That error normally indicates a network issue.
Do you only see it with the barcode column, or does it also happen with other plugin columns?
Try refreshing your network connection, or switching to a different network and see if that helps.
Thanks for responding!
The error only happens for barcode column. I tried another plugin column (QR Code) and it worked fine.
I tried refreshing but the error still appears.

I would suggest clearing the cache of the browser to see if it helps. It works for me here. Chromium on MacOS.