enter image description hereI get these two errors:

ERROR(RSC-005): Error while parsing file 'attribute "epub:type" not allowed here;

ERROR(RSC-005): Error while parsing file 'element "aside" not allowed anywhere;

How can I remove them? I want to use pop-up footnotes with epub3.

Regards Dan

  • Welcome to ebooks-SE. We try to keep thanks to a minimum as it is overhead for most readers. You should never use an answer for thanking, or even for discussing. For that purpose, you can use comments, or possibly editing a previous post. Comments require minimum reputation of 50, but there is an exception when you authored the question, or if you wrote the commented answer. Hence your thanks will be deleted (You cannot do it yourself ... but do not worry). See meta.stackexchange.com/questions/214173/… – babou Oct 28 '18 at 11:18

epub:type attributes can only be used in epub3 books. You'll need to select Polish books > Upgrade book internals to convert your epub2 book to an epub3 book.

  • Thank you Nemo, this solution worked fine. – Dan Oct 27 '18 at 3:03

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