I’ve got the same error but I just want to submit a new version of my WebExtension with, always, a WebExtension
Only the version of my extension change in the manifest and I made only few corrections in source code.
I have another printed error : “Sorry, we couldn’t load your WebExtension.
Erreur: Validation was unable to complete successfully due to an unexpected error.”
How could I submit a new version of my WebExtension in that case ?
It seems to be a problzm with my zip file that only impact this verification because other tests were ok.
Problem solved with a new zip file.