erros for my epub with atlantis
hi here is the errors please help me!!!!
make it with atlantis word procesor
ERROR: Publisher value is missing in Ops/content.opf
ERROR: Unable to locate a valid publication date. A date with the event attribute publication (opf:event=publication) is required in Ops/content.opf
ERROR: Unmanifested file: META-INF/calibre_bookmarks.txt