未捕获类型错误：无法读取属性'；版本'；运行datatable angular指令时buttons.flash.js处未定义的

我从

从安装数据表按钮扩展

angular.json package.json 运行此项目时，返回如下错误：

---

未捕获类型错误：无法读取按钮处未定义的属性“版本”。flash.js

解决了这个问题。按钮的顺序应该是这样的

https://code.jquery.com/jquery-3.3.1.js
https://cdn.datatables.net/1.10.19/js/jquery.dataTables.min.js
https://cdn.datatables.net/buttons/1.5.2/js/dataTables.buttons.min.js // should be loaded first before other plugins
https://cdn.datatables.net/buttons/1.5.2/js/buttons.flash.min.js
https://cdnjs.cloudflare.com/ajax/libs/jszip/3.1.3/jszip.min.js  // can be loaded up
https://cdnjs.cloudflare.com/ajax/libs/pdfmake/0.1.36/pdfmake.min.js
https://cdnjs.cloudflare.com/ajax/libs/pdfmake/0.1.36/vfs_fonts.js
https://cdn.datatables.net/buttons/1.5.2/js/buttons.html5.min.js
https://cdn.datatables.net/buttons/1.5.2/js/buttons.print.min.js

 "dependencies": {
    "@angular/animations": "6.0.7",
    "@angular/common": "6.0.7",
    "@angular/compiler": "6.0.7",
    "@angular/core": "6.0.7",
    "@angular/forms": "6.0.7",
    "@angular/http": "6.0.7",
    "@angular/platform-browser": "6.0.7",
    "@angular/platform-browser-dynamic": "6.0.7",
    "@angular/platform-server": "6.0.7",
    "@angular/router": "6.0.7",
    "@nguniversal/module-map-ngfactory-loader": "^5.0.0-beta.5",
    "angular-datatables": "^6.0.0",
    "aspnet-prerendering": "^3.0.1",
    "bootstrap": "^3.3.7",
    "core-js": "^2.4.1",
    "datatables.net": "^1.10.19",
    "datatables.net-buttons": "^1.5.3",
    "datatables.net-buttons-dt": "^1.5.3",
    "datatables.net-dt": "^1.10.19",
    "jquery": "^3.3.1",
    "jszip": "^3.1.5",
    "rxjs": "^6.2.1",
    "zone.js": "^0.8.26"
  },

https://code.jquery.com/jquery-3.3.1.js
https://cdn.datatables.net/1.10.19/js/jquery.dataTables.min.js
https://cdn.datatables.net/buttons/1.5.2/js/dataTables.buttons.min.js // should be loaded first before other plugins
https://cdn.datatables.net/buttons/1.5.2/js/buttons.flash.min.js
https://cdnjs.cloudflare.com/ajax/libs/jszip/3.1.3/jszip.min.js  // can be loaded up
https://cdnjs.cloudflare.com/ajax/libs/pdfmake/0.1.36/pdfmake.min.js
https://cdnjs.cloudflare.com/ajax/libs/pdfmake/0.1.36/vfs_fonts.js
https://cdn.datatables.net/buttons/1.5.2/js/buttons.html5.min.js
https://cdn.datatables.net/buttons/1.5.2/js/buttons.print.min.js