Theme URL error/won't load

## Description
I previously created a theme in Leonardo and saved the URL.
When I go back to the URL later to update and adjust it, it won't load.

## Steps to reproduce

1. Create Key colors in OKLAB color space with Smoothing on
2. Go to [my theme URL](https://leonardocolor.io/theme.html?name=Untitled&config=%7B%22baseScale%22%3A%22Gray%22%2C%22colorScales%22%3A%5B%7B%22name%22%3A%22Gray%22%2C%22colorKeys%22%3A%5B%22%23f9f9f9%22%2C%22%23161616%22%5D%2C%22colorspace%22%3A%22OKLAB%22%2C%22ratios%22%3A%5B%221.06%22%2C%221.36%22%2C%221.76%22%2C%222.35%22%2C%223.19%22%2C%224.42%22%2C%226.19%22%2C%228.86%22%2C%2212.27%22%2C%2216.1%22%5D%2C%22smooth%22%3Atrue%7D%2C%7B%22name%22%3A%22Blue%22%2C%22colorKeys%22%3A%5B%22%23f3fbff%22%2C%22%23126bca%22%2C%22%230ba7ff%22%2C%22%230e4b77%22%5D%2C%22colorspace%22%3A%22OKLAB%22%2C%22ratios%22%3A%5B%221.06%22%2C%221.36%22%2C%221.76%22%2C%222.35%22%2C%223.19%22%2C%224.42%22%2C%226.19%22%2C%228.86%22%2C%2212.27%22%2C%2216.1%22%5D%2C%22smooth%22%3Atrue%7D%2C%7B%22name%22%3A%22Light+blue%22%2C%22colorKeys%22%3A%5B%22%23c8dcf4%22%2C%22%236490e8%22%5D%2C%22colorspace%22%3A%22OKLAB%22%2C%22ratios%22%3A%5B%221.06%22%2C%221.36%22%2C%221.76%22%2C%222.35%22%2C%223.19%22%2C%224.42%22%2C%226.19%22%2C%228.86%22%2C%2212.27%22%2C%2216.1%22%5D%2C%22smooth%22%3Atrue%7D%2C%7B%22name%22%3A%22Green%22%2C%22colorKeys%22%3A%5B%22%2314483f%22%2C%22%230d6d5d%22%2C%22%235abf76%22%5D%2C%22colorspace%22%3A%22OKLAB%22%2C%22ratios%22%3A%5B%221.06%22%2C%221.36%22%2C%221.76%22%2C%222.35%22%2C%223.19%22%2C%224.42%22%2C%226.19%22%2C%228.86%22%2C%2212.27%22%2C%2216.1%22%5D%2C%22smooth%22%3Atrue%7D%2C%7B%22name%22%3A%22Brown%22%2C%22colorKeys%22%3A%5B%22%235a5453%22%2C%22%232c2826%22%5D%2C%22colorspace%22%3A%22OKLAB%22%2C%22ratios%22%3A%5B%221.06%22%2C%221.36%22%2C%221.76%22%2C%222.35%22%2C%223.19%22%2C%224.42%22%2C%226.19%22%2C%228.86%22%2C%2212.27%22%2C%2216.1%22%5D%2C%22smooth%22%3Atrue%7D%2C%7B%22name%22%3A%22Pink%22%2C%22colorKeys%22%3A%5B%22%23f2dbd1%22%2C%22%23eb9d87%22%5D%2C%22colorspace%22%3A%22OKLAB%22%2C%22ratios%22%3A%5B%221.06%22%2C%221.36%22%2C%221.76%22%2C%222.35%22%2C%223.19%22%2C%224.42%22%2C%226.19%22%2C%228.86%22%2C%2212.27%22%2C%2216.1%22%5D%2C%22smooth%22%3Atrue%7D%2C%7B%22name%22%3A%22Orange%22%2C%22colorKeys%22%3A%5B%22%23ff7115%22%5D%2C%22colorspace%22%3A%22OKLAB%22%2C%22ratios%22%3A%5B%221.06%22%2C%221.36%22%2C%221.76%22%2C%222.35%22%2C%223.19%22%2C%224.42%22%2C%226.19%22%2C%228.86%22%2C%2212.27%22%2C%2216.1%22%5D%2C%22smooth%22%3Atrue%7D%2C%7B%22name%22%3A%22Red%22%2C%22colorKeys%22%3A%5B%22%234f1420%22%2C%22%23fa0a0a%22%5D%2C%22colorspace%22%3A%22OKLAB%22%2C%22ratios%22%3A%5B%221.06%22%2C%221.36%22%2C%221.76%22%2C%222.35%22%2C%223.19%22%2C%224.42%22%2C%226.19%22%2C%228.86%22%2C%2212.27%22%2C%2216.1%22%5D%2C%22smooth%22%3Atrue%7D%2C%7B%22name%22%3A%22Purple%22%2C%22colorKeys%22%3A%5B%22%23301f44%22%2C%22%236021aa%22%2C%22%23bf41fb%22%5D%2C%22colorspace%22%3A%22OKLAB%22%2C%22ratios%22%3A%5B%221.06%22%2C%221.36%22%2C%221.76%22%2C%222.35%22%2C%223.19%22%2C%224.42%22%2C%226.19%22%2C%228.86%22%2C%2212.27%22%2C%2216.1%22%5D%2C%22smooth%22%3Atrue%7D%5D%2C%22lightness%22%3A100%2C%22contrast%22%3A1%2C%22saturation%22%3A100%2C%22formula%22%3A%22wcag2%22%7D)
3. Observe the website won't load
4. Open the console

## Expected behavior
My theme to load

## Screenshots

## Environment
- **Browser(s) and OS(s):** Version 100.0.4896.127 (Official Build) (arm64) MacOS 12.4 MacBook Pro M1

Open the linked theme URL in the reported browser and inspect the console first, then trace the frontend path that reads the URL configuration. Reproduce the OKLAB theme with smoothing enabled; done means the saved theme loads and can be updated without a console error.

Written by the indexing model from the issue text.