Google's FCM single-user push can only be successful for the first time after a change in the device's token. What's going on?

app unloading and reloading will generate a new token, that will be updated to the database. However, when you call api push, you only get the message the first time, but you can"t receive it later. This is the case after several attempts.

Mar.16,2021

the Google service will generate token, only when it is installed for the first time. If you cannot connect to the Google server at that time, the token cannot be pushed to Google, and the subsequent Google service will not be available

.
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-64f5-1b35222-2bf62.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1b35222-2bf62.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
Need Help?