Deformation of the mesh when using IKTwoBone

Hello, I’m creating a control rig for the model, and I’m experiencing an issue with mesh deformation when I connect the IKTwoBone node.

Here’s an example of the model before connecting IKTwoBone:



And here’s the model after:


Even when I input values into the Axis, the situation doesn’t change.

Could you please help me solve this issue?