library.json error when uploading to wordpress??

Keep getting the following error message when uploading a php file into wordpress.....

  • Missing title.
  • Could not find library.json file with valid json format for library jQuery.ui
falcon's picture

I tried uploading the file to my own installation and also inspected the file manually. Can't find anything wrong with it. Might be something wrong with the setup of the server that triggers this allthough it is a strange error message. Have you configured PHP?