Error adding video slide

Hi,

Getting an error when I try to add a video slide. I fill out the necessary info, click ‘Insert video slide’ but instead of linking to the video, I get an error message that reads:

file_get_contents(http://vimeo.com/api/v2/video/*myvideo*.php): failed to open stream: HTTP request failed! HTTP/1.1 404 Not Found
in /*mysite*/wp-content/plugins/gallery-video/admin/video_gallery_view.php on line 322

Any ideas?
Thanks!

https://wordpress.org/plugins/gallery-video/