The Problem: when I click Add Youtube Video in WordPress > Browse.. the screen would come blank
I looked in Youtube , Google, etc how to solve the problem, and no help!… Youtube for WordPress wants you to buy a license in order to help.
Cause of the Problem: So I uncover that a Plug In (Page Builder by Site Origin) was causing the problem after it was installed
The solution:
Click Visual Text Editor and add the following code [yt4wp-video video_id=”yourVIdeoID”] where between the Quations mark type your YouTube video ID (normally you find it when you click the “share Button it’s everything after the “/” sign
Hope this helps someone