Animation not completing itself?

I have an animation gui that plays my animations [that I created]. Sometimes the animations play fully, without flaws and most other times they stop halfway, at random, or do not play at all. The /e dance emote stops when something pushes the player, could this be it? Something I have considered doing is having the player be in platform stand when the animation is running, but then they will not be able to move.

If you want to know how I make them play is by using { "play()" } and I Fire the server animation.