If there is a translator, an error message like the image appears and saving is not possible.

[baho1]

If there is a translator, an error message like the image appears and saving is not possible.

[baho1]

It seems we need to change ‘:role’ to ‘role’ on line 221 of epub2.py in the ebookmeta library.
So I downloaded the source, modified ebookmeta, installed it, and compiled it with libro2's source, but it doesn't run properly due to a plugin path issue.
If possible, it would be great if you could create a modified version.