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Unhandled rejection TypeError: Cannot read property '0' of undefined

See original GitHub issue

When I try to run the build process with webpack I am having this error:

Unhandled rejection TypeError: Cannot read property '0' of undefined
    at Object.transform (/Users/matheus/Development/jusbrasil_projects/deadpool-dashboard/webpack/prod.config.js:83:42)
    at Compiler.<anonymous> (/Users/matheus/Development/jusbrasil_projects/deadpool-dashboard/node_modules/webpack-stats-plugin/lib/stats-writer-plugin.js:74:32)
    at Compiler.next (/Users/matheus/Development/jusbrasil_projects/deadpool-dashboard/node_modules/tapable/lib/Tapable.js:69:14)
    at /Users/matheus/Development/jusbrasil_projects/deadpool-dashboard/node_modules/html-webpack-plugin/index.js:203:9
    at PassThroughHandlerContext.finallyHandler (/Users/matheus/Development/jusbrasil_projects/deadpool-dashboard/node_modules/bluebird/js/release/finally.js:55:23)
    at PassThroughHandlerContext.tryCatcher (/Users/matheus/Development/jusbrasil_projects/deadpool-dashboard/node_modules/bluebird/js/release/util.js:16:23)
    at Promise._settlePromiseFromHandler (/Users/matheus/Development/jusbrasil_projects/deadpool-dashboard/node_modules/bluebird/js/release/promise.js:510:31)
    at Promise._settlePromise (/Users/matheus/Development/jusbrasil_projects/deadpool-dashboard/node_modules/bluebird/js/release/promise.js:567:18)
    at Promise._settlePromise0 (/Users/matheus/Development/jusbrasil_projects/deadpool-dashboard/node_modules/bluebird/js/release/promise.js:612:10)
    at Promise._settlePromises (/Users/matheus/Development/jusbrasil_projects/deadpool-dashboard/node_modules/bluebird/js/release/promise.js:691:18)
    at Async._drainQueue (/Users/matheus/Development/jusbrasil_projects/deadpool-dashboard/node_modules/bluebird/js/release/async.js:138:16)
    at Async._drainQueues (/Users/matheus/Development/jusbrasil_projects/deadpool-dashboard/node_modules/bluebird/js/release/async.js:148:10)
    at Immediate.Async.drainQueues (/Users/matheus/Development/jusbrasil_projects/deadpool-dashboard/node_modules/bluebird/js/release/async.js:17:14)
    at runCallback (timers.js:574:20)
    at tryOnImmediate (timers.js:554:5)
    at processImmediate [as _immediateCallback] (timers.js:533:5)