# Left Hand IK Error

<figure><img src="https://3983499731-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FxsGuM7QMKoTm8rnHX3cO%2Fuploads%2FrETldYrxxiVDzntEai4p%2Fimage.png?alt=media&#x26;token=3330dc7a-ab33-44f4-8191-042c4c55d420" alt=""><figcaption><p>Example of the error message</p></figcaption></figure>

## Reason - Corrupt Avatar Mask

This issue happens when using a broken avatar mask for the [left-hand-ik-layer](https://kinemation.gitbook.io/fps-animation-framework/fundamentals/animation-layers/left-hand-ik-layer "mention").

### How to fix?

Create a new Avatar Mask for the left hand and import your character skeleton. Select the left hand and fingers:

{% tabs %}
{% tab title="Humanoid" %}

<figure><img src="https://3983499731-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FxsGuM7QMKoTm8rnHX3cO%2Fuploads%2FlM3VoZTezQmaC0DlWStg%2Fimage.png?alt=media&#x26;token=84ab7bc6-391c-43dc-9d6c-d94413e5bf95" alt="" width="323"><figcaption></figcaption></figure>
{% endtab %}

{% tab title="Generic" %}

<figure><img src="https://3983499731-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FxsGuM7QMKoTm8rnHX3cO%2Fuploads%2FdLB23MZsuDcBWXjgs5vI%2Fimage.png?alt=media&#x26;token=a1928910-9d5e-4564-85a9-4989e8be686e" alt="" width="280"><figcaption></figcaption></figure>
{% endtab %}
{% endtabs %}