E0002 DC New Scene - Always showing Python error when exporting.

[Luks-18]

It's the error shown in this image, it started happening after creating some shape keys for the mouth, but the error shows up even when I don't include the custom scene in the event when exporting, which makes me believe something went wrong with the addon in that project.

Here is the project file:

E0002 Alternate Clash 3.zip