Real time graph works but other graphs does not work

Hello community,

I was wondering if some one can help me or point me to the right direction. I’m new to librenms and I took over this server from some else that left my company. I having issue of some device having graph data but other device ( cisco router, switch , servers) will not pull any data. I can do snmp walk from my librenms server and real time graph works. The validate on the gui and server said there is nothing wrong. Does anyone has some idea where should go next?

$ ./
Fetching new release information OK
Updating to latest release OK
Updating Composer packages OK
Updating SQL-Schema OK
Updating submodules OK
Cleaning up DB OK
Fetching notifications OK
Caching PeeringDB data OK
$ ./validate.php

Component Version
LibreNMS 21.2.0
DB Schema 2021_02_09_084318_remove_perf_times (199)
PHP 7.4.15
Python 3.5.2
MySQL 5.7.33-0ubuntu0.16.04.1
RRDTool 1.5.5


[OK] Composer Version: 2.0.9
[OK] Dependencies up-to-date.
[OK] Database connection successful
[OK] Database schema correct

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