Markdown footnote error

If you edit markdown files with eclipse WikiTest Editor, sometimes it may report errors on your editor when you are using the reference link for images or links.

Error Info
The error reports footnote 'footnote-error' is miss which is obviously existing at the end of this text.

but it won’t effect the page build result, this page can display correctly.

How to fix?

Resolution Info
Finally I found if you insert a blank space between the colon : and the link, the error footnote 'footnote-error' is miss will disappear.