Occasionally finish generating without loading the model and output no image

## Describe the bug

When using an illustrious model, it occasionally finishes generating without even loading the model and, of course, outputs no image. Using another model and changing back will solve the issue.

## To Reproduce

I cannot describe how to reproduce it because it happens occasionally. It seems to happen only when using the illustrious series.

## Expected behavior

It should generate normally even when using an illustrious model, because it works well most of the time.

## Environment

- OS: [e.g. Windows 11]
- GPU: [e.g. Intel Arc Graphics]
- CPU: [e.g. Ultra 125H]
- Version: [e.g. v2.5.5]