Able Ability System Info and Support Thread

That sounds very much like you have your animation blueprint setup to go into the Ability State Machine, but not out of it - so it goes in plays the Ability, but then gets stuck in that state machine with no Ability to play.

See:
https://extralifestudios.atlassian.net/wiki/spaces/ABLE/pages/4882437/Setting+up+an+Ability+Animation+State+Node