Course opens and Plays in a new tab but opens an error tab in Cornerstone

I have uploaded a Storyline 360 course into our LMS, Cornerstone.  When the course is launched, it opens in a new tab as expected but also opens an error message in another tab.  This is happening with one other module as well and I am not sure why. I am adding an image of the error message. 

The modules are in a "playlist" and what should happen is that it opens in another tab while leaving the playlist tab open. When the user closes the module they are back at the Playlist tab. But the error message takes over the playlist tab currently.  

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