The node-tree does not necessarily contain an output node, so it has to be checked, as well as the existence of the socket. Pull Request: https://projects.blender.org/blender/blender/pulls/111604
The node-tree does not necessarily contain an output node, so it has to be checked, as well as the existence of the socket. Pull Request: https://projects.blender.org/blender/blender/pulls/111604