Issue with Raindrops Exercise?

Hi, I just downloaded the "Raindrops" exercise of the reasonML track locally. The `npm install` command seems to work fine, but when I run `npm start` I get this output:

```
> exercism-reasonml@0.1.0 start /Users/jim/Exercism/reasonml/raindrops
> bsb -make-world -w

Error: Raindrops does not have implementation file
>>>> Start compiling
Error: Raindrops does not have implementation file
>>>> Finish compiling(exit: 2)
```

And then `npm test` can't find any tests. 😕

I tried it both with npm v8, v10, and v12 and just got the same error is all cases...

Am I doing something wrong here? Is it just an issue with the exercise? Thanks! 🙏