Animation plays partway, then freezes

I created a basic sword attack animation and I wanted to see how it runs when my character presses a button. For some reason, the animation preview in the animation sequences shows the animation playing just fine, but when I try to test it in-game, the character barely moves their arms. I’m not sure what’s going on here, any help is appretiated:

Pictures of setup:

Not sure why all the images stacked, the links to the other pictures are still there however.