HarmonyOS 鸿蒙Next 5.0（API12）调用startAbilityByType拉起邮箱类应用，附件添加失败

HarmonyOS 鸿蒙Next 5.0（API12）调用startAbilityByType拉起邮箱类应用，附件添加失败

try{
      let documentSelectOptions = new picker.DocumentSelectOptions();
      let documentPicker = new picker.DocumentViewPicker(getContext(this));
      documentPicker.select(documentSelectOptions).then((documentSelectResult: Array<string>) => {
        console.info('DocumentViewPicker.select successfully, documentSelectResult uri: ' + JSON.stringify(documentSelectResult));

        let context = getContext(this) as common.UIAbilityContext;
        let wantParam: Record<string, Object> = {
          'sceneType': 1,
          'email': [encodeURI('test@qq.com')], // 收件人邮箱地址，多值以逗号分隔，对数组内容使用encodeURI()方法进行url编码
          'subject': encodeURI('邮件主题'), // 邮件主题，对内容使用encodeURI()方法进行url编码
          'body': encodeURI('邮件正文'), // 邮件正文，对内容使用encodeURI()方法进行url编码
          'ability.params.stream': documentSelectResult, // 附件uri，多值以逗号分隔，对数组内容使用encodeURI()方法进行url编码
          'ability.want.params.uriPermissionFlag': wantConstant.Flags.FLAG_AUTH_READ_URI_PERMISSION
        };
        let abilityStartCallback: common.AbilityStartCallback = {
          onError: (code: number, name: string, message: string) => {
            console.log(`onError code ${code} name: ${name} message: ${message}`);
          },
          onResult: (result)=>{
            console.log(`onResult result: ${JSON.stringify(result)}`);
          }
        }

        context.startAbilityByType("mail", wantParam, abilityStartCallback,
          (err) => {
            if (err) {
              console.error(`startAbilityByType fail, err: ${JSON.stringify(err)}`);
            } else {
              console.log(`success`);
            }
          });

      }).catch((err: BusinessError) => {
        console.error('DocumentViewPicker.select failed with err: ' + JSON.stringify(err));
      });
    } catch (error) {
      let err: BusinessError = error as BusinessError;
      console.error('DocumentViewPicker failed with err: ' + JSON.stringify(err));
    }

怀疑是邮箱应用没有对我选择文件的访问权限，有没有大佬遇到过这个问题，如何解决