After updating zabbix server from 6.4.15 to version 7, some data from cisco is not transferred to the server. I see the following errors in the logs. I tried increasing the timeout - it didn't help.

709045:20240617:110609.200 resuming SNMP agent checks on host "PT-GZ-45": connection restored
709146:20240617:110613.519 SNMP agent item "net.if.walk" on host "PT-GZ-45" failed: first network error, wait for 60 seconds
709055:20240617:110713.292 resuming SNMP agent checks on host "PT-GZ-45": connection restored
709146:20240617:110717.519 SNMP agent item "net.if.walk" on host "PT-GZ-45" failed: first network error, wait for 60 seconds
709053:20240617:110817.368 resuming SNMP agent checks on host "PT-GZ-45": connection restored

This is not just my problem, below are links to other users' problems as well.
https://www.zabbix.com/forum/zabbix-troubleshooting-and-problems/485759-cisco-old-device-net-if-walk-problem-7-0-0

https://www.reddit.com/r/zabbix/comments/1danu0b/zabbix_not_pulling_showing_data_for_cisco_4510/