Hi Team,

These are errors which I got in my file..
 
Unable to load external DTD subset via 'file:///C:/Users/Malar/Desktop/epub/dtd/book.dtd'. 'Well-formedness violation: Character 'D' is grammatically unexpected'
                Error location: book
                Details
                                WFC: External Subset: Unable to load external DTD subset via 'file:///C:/Users/Malar/Desktop/epub/dtd/book.dtd'. 'Well-formedness violation: Character 'D' is grammatically unexpected'

Regards
Malar