Angular 角度材质日期选择器-产品中的空白弹出窗口

不知道我错过了什么。当我在本地使用ng build和ng serve运行它时，它可以很好地工作

但当我转到生产部门时，它就开始这样运作了。然后我尝试使用ng build-prod和ng serve-prod在本地复制。现在我也可以在本地复制这个问题

我想要的：datepicker弹出窗口应该以正确的样式出现，并且应该能够选择日期

现在的工作内容：在本地，它与ng build和ng serve一起工作

问题是：在prod中或使用ng build-prod和ng service-prod时，弹出窗口显示为空。请看下图

我尝试过的内容：在研究之后，我发现了一些建议，可以尝试使用ng service-prod-build optimizer=false，也可以在angular.json中使用buildOptimizer:false

错误：当我点击datepicker图标时，我可以看到下面的错误

TypeError: Cannot read property 'getElementsByClassName' of

请让我知道调试此问题需要更多信息。我想创建一个stackblitz，但它似乎在stackblitz中起作用

package.json：

  "dependencies": {
    "@angular/animations": "^7.0.3",
    "@angular/cdk": "^7.0.3",
    "@angular/common": "~7.0.0",
    "@angular/compiler": "~7.0.0",
    "@angular/core": "~7.0.0",
    "@angular/flex-layout": "^7.0.0-beta.19",
    "@angular/forms": "~7.0.0",
    "@angular/http": "~7.0.0",
    "@angular/material": "^7.0.3",
    "@angular/material-moment-adapter": "^7.3.4",
    "@angular/platform-browser": "~7.0.0",
    "@angular/platform-browser-dynamic": "~7.0.0",
    "@angular/router": "~7.0.0",
    "@swimlane/ngx-charts": "^10.1.0",
    "angular-google-charts": "^0.1.3",
    "bootstrap": "^4.1.3",
    "chart.js": "^2.8.0",
    "core-js": "^2.5.4",
    "dotenv": "^7.0.0",
    "hammerjs": "^2.0.8",
    "jquery": "^3.3.1",
    "moment": "^2.24.0",
    "ng-pick-datetime": "^5.2.6",
    "ng2-charts": "^2.0.3",
    "ng2-tooltip-directive": "^2.1.8",
    "ng4-charts": "^1.0.2",
    "ngx-cookie-service": "^2.1.0",
    "rxjs": "~6.3.3",
    "rxjs-compat": "^6.3.3",
    "zone.js": "~0.8.26"
  },
  "devDependencies": {
    "@angular-devkit/build-angular": "^0.11.4",
    "@angular/cli": "~7.0.2",
    "@angular/compiler-cli": "~7.0.0",
    "@angular/language-service": "~7.0.0",
    "@types/jasmine": "~2.8.8",
    "@types/jasminewd2": "~2.0.3",
    "@types/jquery": "^3.3.29",
    "@types/node": "~8.9.4",
    "codelyzer": "~4.5.0",
    "jasmine-core": "~2.99.1",
    "jasmine-spec-reporter": "~4.2.1",
    "karma": "~3.0.0",
    "karma-chrome-launcher": "~2.2.0",
    "karma-coverage-istanbul-reporter": "~2.0.1",
    "karma-jasmine": "~1.1.2",
    "karma-jasmine-html-reporter": "^0.2.2",
    "ngx-spec": "^2.0.0",
    "protractor": "~5.4.0",
    "ts-node": "~7.0.0",
    "tslint": "~5.11.0",
    "typescript": "~3.1.1"
  }

html:

---

似乎是材质日期选择器中的一个缺陷。这不是一个解决方案，而是一个对我有效的变通方法。 您可以尝试在angular.json中进行以下更改吗

---

是的，这似乎是一个解决办法。现在我将使用这个解决方案，因为我在本地机器上得到了空的弹出窗口。你能分享你的工作方法吗

        <mat-form-field>
                <mat-label>From Date</mat-label>
                <input  [value]="date.value" matInput [matDatepicker]="summBoardFromDatePicker"  placeholder="From Date" [(ngModel)]="summBoardFromDate">
                <mat-datepicker-toggle  matSuffix [for]="summBoardFromDatePicker"></mat-datepicker-toggle>
                <mat-datepicker #summBoardFromDatePicker></mat-datepicker>
        </mat-form-field>

"optimization": false
"aot": false
"buildOptimizer": false