It's been a while since I tested the automatic reply function of the official account. I tested it today and reported an error:
"The service provided by this official account has failed, please try again later"
I remember that this error did not occur before, so I went to troubleshoot the program problem.
The reason for this error on the official account is:
1. Reply directly to success (recommended method) 2. Reply directly to an empty string (referring to an empty string with a byte length of 0, rather than the content of the content field in the XML structure being empty)
Once the following situations are encountered, WeChat will issue a system prompt to the user during the official account session, "This official account is temporarily unable to provide services, please try again later":
2. The developer did not reply within 5 seconds. 2. The developer replied with abnormal data, such as JSON data, etc.
After investigation of these two problems, no abnormality was found. Another situation is
Official account authorization third party issue
Official account background [Settings and development] [Official account settings] [Authorization management] [Third-party platform]
After I deauthorized all third parties, it returned to normal
Original address: https://gofly.v1kf.com/article/39