payChannelList是[], Array.isArray为true, 不知道什么原因报错

<FormItem label="支付通道" hasFeedback {...formItemLayout}>
          {getFieldDecorator('payChannelId', {
            rules: [
              {
                required: true,
              },
            ],
            initialValue: payChannelId
          })(<Select
            style={{width: '100%'}}
            onChange={this.payChannelChange}
            mode="multiple"
          >
            {payChannelList && payChannelList.map((item, key) =>
              <Option key={key} value={item.payChannelId}>{item.payChannelNote}</Option>)
            }
          </Select>)}
        </FormItem>