[hardsource:3154a74b] Could not freeze ./app/webpack/packs/application.js: Cannot read property 'hash' of undefined
(node:69641) UnhandledPromiseRejectionWarning: TypeError: current.readableIdentifier is not a function
    at formatError (/Users/user/Products/project-name/node_modules/webpack/lib/Stats.js:352:30)
    at Array.map (<anonymous>)
    at Stats.toJson (/Users/user/Products/project-name/node_modules/webpack/lib/Stats.js:359:31)
    at WebpackAssetsManifest.handleEmit (/Users/user/Products/project-name/node_modules/webpack-assets-manifest/src/WebpackAssetsManifest.js:445:41)
    at AsyncSeriesHook.eval [as callAsync] (eval at create (/Users/user/Products/project-name/node_modules/tapable/lib/HookCodeFactory.js:33:10), <anonymous>:5:1)
    at AsyncSeriesHook.lazyCompileHook (/Users/user/Products/project-name/node_modules/tapable/lib/Hook.js:154:20)
    at Compiler.emitAssets (/Users/user/Products/project-name/node_modules/webpack/lib/Compiler.js:491:19)
    at onCompiled (/Users/user/Products/project-name/node_modules/webpack/lib/Watching.js:51:19)
    at /Users/user/Products/project-name/node_modules/webpack/lib/Compiler.js:681:15
    at _next0 (eval at create (/Users/user/Products/project-name/node_modules/tapable/lib/HookCodeFactory.js:33:10), <anonymous>:14:1)
(node:69641) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). To terminate the node process on unhandled promise rejection, use the CLI flag `--unhandled-rejections=strict` (see https://nodejs.org/api/cli.html#cli_unhandled_rejections_mode). (rejection id: 1)
(node:69641) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.

$ rm -rf node_modules/.cache/hard-source/