Babel "^7.0.0-0", but was loaded with "6.26.3"

[xcsweb]

Requires Babel "^7.0.0-0", but was loaded with "6.26.3". If you are sure you have a compatible version of @babel/core, it is likely that something in your build process is loading the wrong version. Inspect the stack trace of this error to look for the first entry that doesn't mention "@babel/core" or "babel-core"to see what is calling Babel.

[xcsweb]

[eddyerburgh]

This should work if you use yarn to install, since the project has a yarn lock file.