Hey Raian, Thanks for use Wazuh !
Just to clarify the ossec.conf file is OK, on the console it's displayed the relative path: "etc/ossec.conf" where the absolute path is: "var/ossec/etc/ossec.conf" So, the problem seems that It's related to another issue
On the screenshot, you attached I can see that there is a syntax identified on a rule.
Could you please share your ossec.conf file and the permissions assigned to this file, the rule that is failing.
Also to analyze better the problem please execute the following command: cat var/ossec/logs/ossec.log | grep -i -E "error|critical|warning|fatal"
Regards
Facundo.