Problem trying to add a host using addhost.php

Hello,

Anyone has any idea of what I can do to try to find the problem?

For example, I’m trying to add a device through addhost.php and it fails, but it is not a snmp connectivity problem because I can snmpwalk the same device from the same server, also I can add the device through the web from the same server.

In the image below I hide the server nanme, community name and device name, but you can see that addhost.php fails, but snmpwalk do not fail.

What else could affect addhost.php?