Error cleaning metadata from EPUB "format (font/otf) isn't supported"
I tried cleaning the metadata from a book, and it failed with one error. I extracted the error from gnome logs:
17:40:55 python3: Error while cleaning metadata from <bookname>.epub: An error occured during the cleaning.
17:40:55 python3: Error while cleaning metadata from <bookname>.epub: An error occured during the cleaning.
17:40:54 python3: ERROR:root:In file /run/user/1000/doc/b5fc5879/<bookname>.epub, element OEBPS/fonts/Shift-BoldItalic.otf's format (font/otf) isn't supported
17:40:54 python3: ERROR:root:In file /run/user/1000/doc/b5fc5879/<bookname>.epub, element OEBPS/fonts/Shift-Bold.otf's format (font/otf) isn't supported
17:40:54 python3: ERROR:root:In file /run/user/1000/doc/b5fc5879/<bookname>.epub, element OEBPS/fonts/AvenirNextLTPro-Regular.otf's format (font/otf) isn't supported
17:40:54 python3: ERROR:root:In file /run/user/1000/doc/b5fc5879/<bookname>.epub, element OEBPS/fonts/AvenirNextLTPro-MediumIt.otf's format (font/otf) isn't supported
17:40:54 python3: ERROR:root:In file /run/user/1000/doc/b5fc5879/<bookname>.epub, element OEBPS/fonts/AvenirNextLTPro-Medium.otf's format (font/otf) isn't supported
17:40:54 python3: ERROR:root:In file /run/user/1000/doc/b5fc5879/<bookname>.epub, element OEBPS/fonts/AvenirNextLTPro-It.otf's format (font/otf) isn't supported
17:40:54 python3: ERROR:root:In file /run/user/1000/doc/b5fc5879/<bookname>.epub, element OEBPS/9780593593813.opf's format (application/oebps-package+xml) isn't supported