ValueError: Failed to recognize model type!

[Rabbit-kun]

Before I moved all my models and files over to Stability Matrix, I moved just a few of each (a checkpoint, a lora, an embedding, a VAE, and an upscaler) to test things out. Everything went well with Forge, A1111, and Comfy.

After a few days of playing around with Comfy, I went back to Forge and I was getting the error in the title:

ValueError: Failed to recognize model type!
Failed to recognize model type!

This persisted across both A111 and Forge. I didn't check Comfy, as I had just about had enough of trying to check into things and I moved what I needed back to my local install of Forge.

Is anyone familiar with this error?