你好，建议断点调试一下走到了哪个业务逻辑

const db = wx.cloud.database();
const _ = db.command;


Page({
  data: {
    users: [],
    clientname: '',
    goods: '',
    hasError2: false,
    contact: '',
    hasError3: false,
    currentDate: '请选择预约时间',
    radio: '',
    dept: '',
    showDate: false,
    columns: [],
    currentPicker: '请选择计划员',
    currentPickerIndex: -1,
    showPicker: false
  },
  onLoad(options) {
    this.setData({
      clientname: options.clientname
    })
  },
  submit() {
    const goods = this.data.goods.trim();
    const contact = this.data.contact.trim();
    if (goods == '') {
      this.setData({
        hasError2: true,
        hasError3: false
      });
    } else if (contact == '') {
      this.setData({
        hasError3: true,
        hasError2: false
      });
    } else if (this.data.dept == '') {
      wx.showToast({
        title: '请选择管理中心',
        icon: 'error'
      })
    } else if (this.data.currentDate == '请选择预约时间') {
      wx.showToast({
        title: '请选择预约时间',
        icon: 'error'
      })
    } else if (this.data.radio == '') {
      wx.showToast({
        title: '请选择上午下午',
        icon: 'error'
      })
    } else if (this.data.currentPicker == '请选择计划员') {
      wx.showToast({
        title: '请选择计划员',
        icon: 'error'
      })
    } else {
      const that = this;
      db.collection('reserve').where({
        date: new Date(that.data.currentDate),
        radio: that.data.radio,
        'step1.people': that.data.currentPicker,
      }).count({
        success: function (res) {
          if (res.total > 5 || (res.total > 3 && that.data.radio == '下午')) {
            wx.navigateTo({
              url: "/pages/reserve/booking-fail/index"
            });
          } else {
            let number = res.total + 1;
            if (that.data.radio == '下午') {
              number += 6;
            }
            db.collection('reserve').add({
              data: {
                number: number,
                clientname: that.data.clientname,
                goods: goods,
                contact: contact,
                dept: that.data.dept,
                date: new Date(that.data.currentDate),
                radio: that.data.radio,
                step1: {
                  people: that.data.currentPicker,
                  peoplecontact: that.data.users[that.data.currentPickerIndex].contact
                },
                sta: 0,
                flg: false
              },
              success: function (res) {
                wx.redirectTo({
                  url: '/pages/service/start/index?id=' + res._id
                });
              }
            });
          }
        }
      })
    }
  },
  showDatePopup() {
    this.setData({
      showDate: true
    });
  },
  onDateConfirm(event) {
    this.setData({
      currentDate: this.formatDate(event.detail),
      showDate: false
    });
  },
  onDateCancel() {
    this.setData({
      showDate: false
    });
  },
  formatDate(date) {
    date = new Date(date);
    return `${date.getFullYear()}-${(date.getMonth() + 1)}-${date.getDate()}`;
  },
  showPickerPopup() {
    this.setData({
      showPicker: true
    });
  },
  onPickerCancel() {
    this.setData({
      showPicker: false
    });
  },
  onPickerConfirm(event) {
    this.setData({
      showPicker: false,
      currentPicker: event.detail.value,
      currentPickerIndex: event.detail.index
    });
  },
  onRadioChange(event) {
    this.setData({
      radio: event.detail
    });
  },
  onDeptChange(event) {
    const that = this;
    db.collection('users').where({
      isdel: false,
      dept: event.detail,
      role: '计划科',
      username: _.neq('admin')
    }).get({
      success: function (res) {
        const users = res.data;
        const columns = users.map(v => v.realname);
        that.setData({
          users: users,
          columns: columns
        });
      }
    });
    this.setData({
      currentPicker: '请选择计划员'
    });


    this.setData({
      dept: event.detail
    });
  },
});