Build error You must provide the URL of lib/mappings.wasm

[ingyer-ks]

Dear Anna,
I got other error message: Build error You must provide the URL of lib/mappings.wasm.
The solution is as mentioned in parcel-bundler/parcel#8005 (comment), using environment variable NODE_OPTIONS=--no-experimental-fetch.
Now I get no error messages and blog page shows well.
Thank you!

[adnjoo]

I cloned the repo, ran npm install and `gatsby develop, and came into the same issue as above.

My remedy was to:

1. npm install graphql dotenv
2. run touch .env.development and put this inside there: NODE_OPTIONS=--no-experimental-fetch
3. add this code to the top of gatsby-config.js

require("dotenv").config({
  path: `.env.${process.env.NODE_ENV}`,
})

and then it worked for me :)