Error proxy server

[zioloool]

I'm trying to install the zabbix proxy. It seems to work but partially. I have the following error:

4003:20230131:143912.836 cannot send proxy data to server at "10.6.205.100": negative response "failed"
4003:20230131:143913.836 cannot send proxy data to server at "10.6.205.100": negative response "failed"
4003:20230131:143914.837 cannot send proxy data to server at "10.6.205.100": negative response "failed"
4003:20230131:143915.838 cannot send proxy data to server at "10.6.205.100": negative response "failed"

I use version 8 of RedHat Enterprise and Zabbix 6.0

The proxy connects correctly, I attach the screen.
For the machines on which I work it is not possible to install the agent.