[v3] ERROR This relative module was not found: ./src/main.js in multi (webpack)-dev-server ...

[timsayshey]

Steps to reproduce

Clone v3 branch then run yarn then run yarn dev.

Then receive the following error:

This relative module was not found:

./src/main.js in multi (webpack)-dev-server/client?http://127.0.0.1:8080/sockjs-node (webpack)/hot/dev-server.js ./src/main.js

Expected behaviour

Run dev-server

Actual behaviour

Error