Where do I need to look to find Elastiflow log information?

Hello, I installed Elastiflow following the steps outliner here:

https://www.catapultsystems.com/blogs/install-elastiflow-on-ubuntu-18-04-part-1/

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I believe I have everything configured correctly but I am not seeing any data on the Elastiflow dashboards. I can't find the log file that shows the data being received by Elastiflow. Does anyone know what file I should be looking at to verify that traffic is at least being received?

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Also, does anyone by chance have a better resource that goes over installing and configuring Elastiflow? I'm having a hard time figuring out what I'm missing, so any help is greatly appreciated!

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thanks