我的appid和secret设置正确，获取openid返回"{"errcode":40029,"errmsg":"invalid code, ……，总是显示code无效，本地appid设置也正确，很奇怪，另一个小程序却完全没问题，求解
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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
从报错信息来看，是appid或密钥有问题。