KepubifyError: open META-INF/container.xml: file does not exist

[Lando-L]

I am using the online EPUB to KEPUB converter. When trying to convert EPUBs I am getting the following error message:
KepubifyError: open META-INF/container.xml: file does not exist.

However, inside the META-INF folder there actually is a non-empty container.xml file indicating the root file of the OEBPS content.

[pgaskin]

Can I see the output of unzip -l whatever.epub (and bsdtar tf whatever.epub if you have it)? I suspect the path in the EPUB isn't clean.

[Lando-L]

The .epub contains the following files:

• META-INF
• OEBPS
• iTunesMetadata-original.plist
• iTunesMetadata.plist
• mimetype