Error opening Illustrator File -54 Error in Ch version 24.2x80

Hello Everyone! I've been using Character Animator since last year and I've been working with Illustrator Files imported to Character Animator. My issue is everytime I make a change to my Illustrator File like updating my character or adding a shape, I just get the "Error opening Illustrator File -54 Error in Ch version 24.2x80" popup in Character Animator and I don't see the changes I've made at all. I've never had these problems before and I've worked with both Photoshop and Illustrator with Character Animator with no problems everytime I make  changes to my psd or ai files. Would love to hear some solutions from you guys and thx in advance!