微信公众号群发一直显示系统错误code为空，是怎么回事？已经两个小时了。
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- 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
- 3、 sample code: Mini Program/Development/Capabilities/Industry capability/Ride Code/Scan Code Payment
- Scan Code Payment: Mini Program/Development/Capabilities/Industry capability/Ride Code/Scan Code Payment
- Return code: 小商店/Development/Capabilities/Commercial capabilities/Trading component/Standard Trading Components and Open Interfaces/Server interface/Get and verify QR code interface/Generate QR code