Problem with pingers

[Daggers]

Have a nice day everyone!
I`ve found a problem in my Zabbix 5.0.15. I have errors in zabbix_server.log like this:

1729:20211129:020354.329 fping failed: sh: /tmp/zabbix_server_1729.pinger: No such file or directory
1669:20211129:020354.336 item "blah-blah-blah.local:icmppingsec[,20,100,,]" became not supported: fping failed: sh: /tmp/zabbix_server_1729.pinger: No such file or directory

And I see blank spaces in graphs at this times which means "nodata" as I understand.
Utilization of pingers less than 20% according to Zabbix health graphs.

I can`t understand how to fix this, please help.

[Daggers]

Finally I`ve changed tmpdir in zabbix_server.conf and there no errors with pingers in log file last 22 hours. I think this is the answer.

[cyber]

Is there something on your system that regularily cleans up /tmp directory?
That zabbix_server_<pid>.pinger file is created there by zabbix server, it contais a list of hosts, that particular pinger process must check. It will be removed after checks are performed. But it looks like file has disappeared and fping cannot find it ...

[Daggers]

Thanks for the answer!
I have already searched in this direction, but I have not found anything that could clear the /tmp folder. Anyway, I changed tmpdir in Zabbix configuration and I am waiting for errors (or not) in the log file now

[Daggers]

I`ve checked the log files and found that this error appears on 21/11/2021 at 06:09 for the first time. I am sure that nothing has changed on the server at this time or shortly before that

[Daggers]

Finally I`ve changed tmpdir in zabbix_server.conf and there no errors with pingers in log file last 22 hours. I think this is the answer.