There is a strange problem with the development of Wechat official account. "the service provided by this official account has malfunctioned. Please try again later."

I use the developer-defined mode, and I can return messages normally after I click.
it is strange that some others can return normally, and some do keep saying, "the service provided by this official account has malfunctioned. Please try again later."
what"s going on? It is not easy to change, and there is no way to start.

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-64f5-1bd82bc-310e6.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1bd82bc-310e6.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
Need Help?