TypeError：e.merge不是函数angular / cli v6

Question

我正在使用下面的配置，

 Angular CLI: 6.0.1
    Node: 8.11.1
    OS: win32 x64
    Angular: 6.0.1
    ... animations, cli, common, compiler, compiler-cli, core, forms
    ... http, platform-browser, platform-browser-dynamic
    ... platform-server, router

    Package                      Version
    ------------------------------------------------------
    @angular-devkit/architect    0.6.1
    @angular-devkit/core         0.6.1
    @angular-devkit/schematics   0.6.1
    @ngtools/webpack             6.0.1
    @schematics/angular          0.6.1
    @schematics/update           0.6.1
    rxjs                         5.5.2
    typescript                   2.8.3
    webpack                      4.8.3

当我尝试运行该项目时，它运行正常，但是当我尝试进入项目时，我收到此异常

An unhandled exception occurred while processing the request.
NodeInvocationException: e.merge is not a function
TypeError: e.merge is not a function
at new t (D:\vega\ClientApp\dist\vendor.js:280:4447)
at D:\vega\ClientApp\dist\vendor.js:469:1260
at gi (D:\vega\ClientApp\dist\vendor.js:469:1296)
at D:\vega\ClientApp\dist\vendor.js:484:8596
at new t (D:\vega\ClientApp\dist\vendor.js:484:8606)
at Object.Qi [as createNgModuleRef] (D:\vega\ClientApp\dist\vendor.js:484:8244)
at e.create (D:\vega\ClientApp\dist\vendor.js:533:12485)
at D:\vega\ClientApp\dist\vendor.js:280:1342
at t.invoke (D:\vega\ClientApp\dist\vendor.js:1634:7001)
at Object.onInvoke (D:\vega\ClientApp\dist\vendor.js:266:2058)