Hi.
I export my epubs from InDesign and then do tidying in Sigil. My latest file is validating fine in pagina EPUB-Checker, but FlightCrew is giving me multiple slight variants on this error:
Error schema not satisfied: attribute 'lang' is not declared for element 'p' near column 53
I'm not well versed in the inner workings of epubs. Can anyone tell me how to fix this error?
I haven't had it before and I've been using Sigil to tidy InDesign exported epubs for years. (Recently upgraded to InDesign 2023)
Thanks!
