addcard返回的code为空？
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- wx.addCard: 小程序/开发/API/开放接口/卡券/wx.addCard
- Raw code: Mini Program/Development/Capabilities/Industry capability/Ride Code/Raw code
- 3、 sample code: Mini Program/Development/Capabilities/Industry capability/Ride Code/Raw code
- wx.addCard#参数: 小程序/开发/API/开放接口/卡券/wx.addCard
- 3、 sample code: Mini Program/Development/Capabilities/Industry capability/Ride Code/Scan Code Payment