Optimzation issue on gif

Had an issue during the bulk optimization. It hung up on this file (a GIF) for at least 30 minutes before I tried a second time. After it was seeming to still fail on that file I proceeded to turn on debugging mode and then try again. However, after turning on debugging mode it didn’t have any trouble with the image.

Image: https://www.dropbox.com/s/k1q1ui0f2pakho7/full-abington-logo-with-shadow.gif?dl=0

https://wordpress.org/plugins/ewww-image-optimizer/