Okay, I took a look at your fixed layout epub3. BTW, it assumes a huge screensize in the layout so many readers will not be able to compensate.
Your logo is in OEBPS/image and the file that references it is OEBPS/Tale_of_tales_titlepage.xhtml.
But in that link you use an incorrect url:
<img src="../image/edge_dpub_logo.png" alt="company logo" width="300" height="300"/>
and that location does not exist. Instead you should have used:
<img alt="edge_dpub_logo" src="image/edge_dpub_logo.png" width="300" height="300"/>
Again if you use Sigil's tools and menus to add that link, mistakes like this will not happen.
As for your unrecognized media-types. They are all text based apple plist files. Effectively, xml files in a format Apple devices recognize.
They are not a core media type. If they are read-only xml data files, then you should move all of those files to be inside the epub's META-INF folder where e-readers will not touch them and then modify the javascript you use to look there for them there. Ditto for your pure xml file.
Then you can remove them from your manifest and prevent the errors both epubcheck and Sigil detect while keeping things working.
If they are read-write then very few systems will support them. If that epub is read on a system with support for "local-storage", you could modify the javascript to copy them there and read/write as needed.
Hope this helps.