nom start errors - please help

[rocheston]

Failed to compile.

./node_modules/material-ui/styles/withStyles.js
Module not found: Can't resolve '@babel/runtime/core-js/map' in '/home/test/downloads/nifty-game/dapp/node_modules/material-ui/styles'
/home/test/downloads/nifty-game/dapp/scripts/start.js:11
throw err;
^

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Can you help, please?

[JoseMariani]

can you fixed? that mean material-ui is not in the map in babel..