error after upgrade from php 7 to php 8.0.13

[majed17]

after the system upgrade, the following started appearing in the cacti log:

Code: Select all

CMDPHP PHP ERROR WARNING Backtrace:   (/cmd_realtime.php[201]:cacti_snmp_session_get(),  /lib/snmp.php[492]:SNMP->get(), CactiErrorHandler())
--
ERROR PHP WARNING: SNMP::get(): Fatal error:  USM generic error in file: /usr/share/cacti/lib/snmp.php  on line: 49

what needs to be done?