WeChat Payment V3.3.7 official demo run, return signature error

Payment V3.3.7 Official demo ran, has modified its syntax error, but always get not to prepay_id, see its return value is "signature error", but the generated sign and the online test tools he provided is the same AH? Ask for expert guidance

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Payment V3.3.7 Official demo ran, has modified its syntax error, but always get not to prepay_id, see its return value is "signature error", but the generated sign and the online test tools he provided is the same AH? Ask for expert guidance

When you set a parameter, is your key The key in the message you are using, or is it your own custom key in the background of the merchant? The 3.3.7 version needs to use key set by itself in the merchant background.
PS: I myself was because of this problem has been not get prepay_id, do not know whether you are the same problem.

I didn't get prepay_id, and I had the same problem.

I didn't get prepay_id, and I had the same problem.

Re-change the key of the Merchant background settings key, you can. It's weird.

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