Error compiling Front-end React-Apollo code in course by Pragmatic Studio

I followed this course long time ago, when it came out.

I tried the source code… and it works.

Compiled successfully!

You can now view getaways-react in the browser.

  Local:            http://localhost:3000
  On Your Network:  http://192.168.1.105:3000

Note that the development build is not optimized.
To create a production build, use npm run build.

I think it’s too much work if You try to update frontend to latest versions, because many packages are changing major version.

so… I got the source code, decompress, went to getaways/frontend, then npm i
for the backend, npm i --prefix assets, mix deps.get, mix compile, mix phx.server

Everything was fine and working.

Did You do something special?