Logstash isn't sending logs to Elastic Cloud Instance

NEED HELP!

I have logstash installed on my Ubuntu server and there is a test drupal website served by apache2 web server, what I'm trying is to read this website logs which are written to a file inside /var/log/apache2, the website generates events and write logs whenever I click on any button on the browser locally, the problem is that logstash is running and sees elastic cloud and there is a connectivity and pipeline is running, but no index is created and no logs in kibana, any help please?

What do the input/filter/output configuration look like? How are you starting logstash?