After Wechat's APP payment is successful, the notify_url set in the java server is not called back.

after the APP calls WeChat Pay successfully, the WeChat end prompts the payment to be successful, and also initiates the deduction. However, the notify_url set in the java server at the app backend is not called back.
callback address: http://39.104.154.1:8080/hdfks/appksxt/wxpay/payNotify.do, the public network is accessible.

what precautions does Wechat APP pay for? is there anything wrong with my callback address?

Jul.01,2021
MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-1e5b16d-440dd.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1e5b16d-440dd.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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