The docx,xlsx,txt,sh,yaml files imported from evernote cannot be opened.

That link still has an href (an href tells Joplin what the link points to), so I would expect it to work.

The bug was that editing an HTML note in the rich text editor would break resource links. (In general, Joplin has much better support for Markdown notes than HTML notes.)

This forum post might also be related: Links to embedded files don't work in WYSIWYG