Animation Retargeting Error

I created a custom legacy animation in unity and attached it to a game object but whenever i try to used the animation (by clicking) it just gives me this error Animation clip ‘sword’ is not retargetable. Animation clips used within the Animator Controller need to have Muscle Definition set up in the Asset Importer Inspector

man i told you before you said you imported the model that contained animation , so you are not retargetting but because console doesn’t make mistakes i think your animation doesn’t belong to your model