Could Not Find Upscaler Named <empty string>

### Discussed in https://github.com/Coyote-A/ultimate-upscale-for-automatic1111/discussions/67

<div type='discussions-op-text'>

<sup>Originally posted by **KazFoxsen** April 13, 2023</sup>
I keep seeing this in the console when I try to upscale: `could not find upscaler named <empty string>, using None as a fallback`
I want to use LSDR, so is there a way to fix this error?</div>