Solvedangular cli AOT build fails

- [x] bug report -> please search issues before submitting
- [ ] feature request

    _                      _                 ____ _     ___
   / \   _ __   __ _ _   _| | __ _ _ __     / ___| |   |_ _|
  / △ \ | '_ \ / _` | | | | |/ _` | '__|   | |   | |    | |
 / ___ \| | | | (_| | |_| | | (_| | |      | |___| |___ | |
/_/   \_\_| |_|\__, |\__,_|_|\__,_|_|       \____|_____|___|
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@angular/cli: 1.2.3
node: 6.11.1
os: darwin x64
@angular/animations: 4.3.1
@angular/common: 4.3.1
@angular/compiler: 4.3.1
@angular/core: 4.3.1
@angular/forms: 4.3.1
@angular/http: 4.3.1
@angular/platform-browser: 4.3.1
@angular/platform-browser-dynamic: 4.3.1
@angular/router: 4.3.1
@angular/cli: 1.2.3
@angular/compiler-cli: 4.3.1
@angular/language-service: 4.3.1

$ ng new hello
$ cd hello
$ ng build --prod

$ ng build --prod
Hash: edf6fb3ccb1b82fa940c
Time: 10775ms
chunk    {0} polyfills.71b130084c52939ca448.bundle.js (polyfills) 177 kB {4} [initial] [rendered]
chunk    {1} main.e81f19d3f6b27a436c79.bundle.js (main) 1.09 kB {3} [initial] [rendered]
chunk    {2} styles.d41d8cd98f00b204e980.bundle.css (styles) 69 bytes {4} [initial] [rendered]
chunk    {3} vendor.f7457d5ac1e9743fd76f.bundle.js (vendor) 849 kB [initial] [rendered]
chunk    {4} inline.18e445e37a0efd4dcfa2.bundle.js (inline) 0 bytes [entry] [rendered]

ERROR in ./src/main.ts
Module not found: Error: Can't resolve './$$_gendir/app/app.module.ngfactory' in 'hello/src'
 @ ./src/main.ts 3:0-74
 @ multi ./src/main.ts