Hello dear, based on your problem description. WeChat Pay shows that the transaction failed due to the following reasons.

The reasons why WeChat shows payment failure:

1. Make sure all the information in your WeChat is filled in correctly.

2. Please check whether the parameters are incorrect or empty. For specific settings, please refer to the development documentation.

3. The amount in WeChat is measured in cents, so please check whether the minimum amount you pass in is greater than 1

In addition, the upper limit of a single WeChat payment is 50,000 Yuan, daily payment cannot exceed 200,000 Yuan