无订阅 支付后出现两个订阅

pkg/signature/errors.go

@@ -0,0 +1,10 @@
+package signature
+
+import "errors"
+
+var (
+	ErrSignatureMissing = errors.New("signature missing")
+	ErrSignatureExpired = errors.New("signature expired")
+	ErrSignatureInvalid = errors.New("signature invalid")
+	ErrSignatureReplay  = errors.New("signature replay")
+)