No config file found - help me pleaseee

hey , i have a problem with my logstash thats running on my ubuntu 18.04 machine.
when i run
journalctl -u logstash
it presents one error that says that no config file found in path etc/log.....
but when i go to conf.d file i can see that i have a logstash.conf file, do you have an idea what can be the problem?

Hi @Jonathan_You need to.provide the actual error logs not a "paraphrased" version for us to help.. please provide all the relevant lines.

Also What settings have you changed? In logstash.yml or pipelines.yml