f3475e58-a033-43d5-949d-e50612cc3675

your mysql client would need to be compatible with caching sha2 password, what is your mysql client?

https://www.php.net/manual/en/function.mysqli-connect.php

we have one php backend and uses this

its probably the version of php

its running in version 7.1

yep that's quite old

we cant update the php version i found this

https://stackoverflow.com/questions/50026939/php-mysqli-connect-authentication-method-unknown-to-the-client-caching-sha2-pa

should i try?

try updating the php version first