HarmonyOS鸿蒙Next中相机拍摄照片后，返回的uri生成PixelMap时报错

HarmonyOS鸿蒙Next中相机拍摄照片后，返回的uri生成PixelMap时报错 相机拍摄照片后 ， 返回的uri生成PixelMap时报错 “Cannot read property createPixelMap of undefined”

import { cameraPicker } from '@kit.CameraKit';
import { camera } from '@kit.CameraKit';
import { BusinessError } from '@ohos.base';
import { hilog } from '@kit.PerformanceAnalysisKit'
import { CommonConstants as Const } from '../common/constants/CommonConstants';
import { image } from '@kit.ImageKit';

@Entry
@Component
struct ImagePickerPage {
  @State uri: Resource | string | undefined = undefined;
  private cameraPosition: Array<camera.CameraPosition> = [
    camera.CameraPosition.CAMERA_POSITION_UNSPECIFIED, camera.CameraPosition.CAMERA_POSITION_BACK,
    camera.CameraPosition.CAMERA_POSITION_FRONT, camera.CameraPosition.CAMERA_POSITION_FOLD_INNER
  ];
  private mediaType: Array<cameraPicker.PickerMediaType> = [
    cameraPicker.PickerMediaType.PHOTO, cameraPicker.PickerMediaType.VIDEO
  ];

  build() {
    Row() {
      Column() {
        Image(this.uri)
          .height($r('app.float.image_height'))
          .alt($r('app.media.startIcon'))

        Button($r('app.string.capture'))
          .width($r('app.float.button_width'))
          .margin({ top: $r('app.float.margin') })
          .onClick(async () => {
            try {
              let pickerProfile: cameraPicker.PickerProfile = { cameraPosition: this.cameraPosition[1] };
              let pickerResult: cameraPicker.PickerResult = await cameraPicker.pick(getContext(this),
                [this.mediaType[0]], pickerProfile);
              this.uri = pickerResult.resultUri;

              image.createImageSource(this.uri).createPixelMap().then(res=>{
                console.log("-----------")
              }).catch(e:BusinessError=>{
                console.log(e.message)
              })

              hilog.info(0x0000, ' ', "the pick pickerResult is:" + JSON.stringify(pickerResult));
            } catch (error) {
              let err = error as BusinessError;
              hilog.error(0x0000, '', `the pick call failed. error code: ${err.code}`);
            }
          })
      }
      .width(Const.FULL_SIZE)
    }
    .height(Const.FULL_SIZE)
  }
}