Yes, I know this question has been asked before and solved for Windows users but the solution does not work for me under MacOS 10.13.6 and Emacs 26.1
I have a file on my desktop named "Test with Spaces.rtf". When I drag this file into a Terminal window I get the path "/Users/RonDoe1/Desktop/Test\ with\ Spaces.rtf"
Now I write in Emacs org mode "[[file:/Users/RonDoe1/Desktop/Test\ with\ Spaces.rtf][Test]]" which collapses nicely to "Test". So far so good. But:
When I click on "Test" I get the error message in the minibuffer:
"No such file: /Users/RonDoe1/Desktop/Test\ with\ Spaces.rtf"
What do I do wrong?