- Change `gem 'mini_racer'` to `gem 'mini_racer', platforms: :ruby` in Gemfile
- Follow this GitHub page https://github.com/eakmotion/therubyracer_for_windows
- Edit this file `C:\Ruby26-x64\lib\ruby\gems\2.6.0\gems\eventmachine-1.2.7-x64-mingw32\lib`, adding `require 'em pure_ruby'` and a newline to the top of the file
- After all this, on my machine, it still throws an exception, but the live reloading works, until it doesn't (most of the time after a failed compile)