This is because the idname for specular node is changed in 1d265eed5d.
Hence `nodeFindSocket` was returning invalid socket.
Pull Request: https://projects.blender.org/blender/blender/pulls/114884
This is because the idname for specular node is changed in 1d265eed5d.
Hence `nodeFindSocket` was returning invalid socket.
Pull Request: https://projects.blender.org/blender/blender/pulls/114884