Logs didn't show in kibana, but there is no relevant error in logs


I have troubles with my ELK stack for the past few weeks; in fact, logs stop showing in kibana, but i don't have any error on the logs.

My stack is composed of logstash - elasticsearch and kibana installed on a debian 11 virtual machine.
Does anyone already have this issue ? I've already tried to get some disk space, restart the stack and the stack

update :

While searching in Kibana's dashboard, i've found this :

Does this mean I need to use filbeat to get logs, if so why logstash didn't report any error ?
Also, why my logstash node didn't show here ?

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