离子＆＃34;意外的价值＆＃39;未定义＆＃39;由模块宣布＆＃39; AppModule＆＃39;＆＃34;

Question

我对我的应用程序中的一个视图进行了一些小的更改，现在我遇到了致命的错误，如下所示：

Unexpected value 'undefined' declared by the module 'AppModule'

我已经检查过app.module中的周期性引用和问题，但是已经能够看到导致问题的任何内容。以下是崩溃后更改的类的功能

以下是我的医生：

populatePage(id){
        console.log("single-test populate page testID");
        console.log(id);
        this.restService.getMedHist(id)
        .then(data => {
            console.log("patient data");
            console.log(data);
            this.medicalHistory = data;
            this.obField = this.medicalHistory.ob;
            this.gynField = this.medicalHistory.gyn;
            this.pmhField = this.medicalHistory.pmh;
            this.pshField = this.medicalHistory.psh;
            this.medsField = this.medicalHistory.meds;
            this.allField = this.medicalHistory.allVal;
            this.shField = this.medicalHistory.sh;
            console.log("data assigned");
        }).catch(e => {
            console.log(e);
        }); 
    }

REST的服务：

getMedHistory(id) {
    return new Promise(resolve => {
        this.http.get('/getMedHist/' + id)
        .subscribe(data => {
            console.log("rest-services.ts medHistory");
            this.medHistData = data;
            console.log(this.medHistData);
            resolve(this.medHistData);
        });
    });
}

下面的

是我的app.module.ts：

import { NgModule, ErrorHandler } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { IonicApp, IonicModule, IonicErrorHandler } from 'ionic-angular';
import { MyApp } from './app.component';
import { MedHist } from '../pages/medHist/medHist';
import { AuthService } from '../providers/auth/auth';
import { RestService } from '../providers/rest-service/rest-service';
import { ShareServiceProvider } from '../providers/share-service/share-service';


@NgModule({
  declarations: [
    MyApp,
    AllPatientsPage,
    MedHist
  ],
  imports: [
    BrowserModule,
    HttpClientModule,
    IonicModule.forRoot(MyApp)
  ],
  bootstrap: [IonicApp],
  entryComponents: [
    MyApp,
    AllPatientsPage,
    MedHist
  ],
  providers: [
    StatusBar,
    SplashScreen,
    {provide: ErrorHandler, useClass: IonicErrorHandler},
    ShareServiceProvider,
    RestService
  ]
})
export class AppModule {}