WeChat Pay keeps reporting an error on the app side that the payment verification signature failed. However, it was still possible to pay for the first two days. If I try to test it after two days, it will not work. The signature I generated is the same as the signature generated by the official signature generation tool. Same, I don’t know why this error is reported
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1. No one has touched the WeChat merchant configuration
2. No one has touched the local configuration