Error: Cannot find module '../../.babel.react'

[AlekseyMalakhov]

I'm doing tutorial How to Create a Package in a Webiny Project. After creating all the files and running yarn build I got the error

Error: Cannot find module '../../.babel.react'

There is a note about this file on the tutorial page:

Every Webiny project comes with a .babel.react.js and .babel.node.js. You don’t need to know all the configurations. But, if you’re interested feel free to check the full configuration file external link.

But I don't have this file. I tried to create this file but I just got more errors