Hi!

Problem, that I'm receiving Internal Server Error 
Error log of django : https://pastebin.com/9dxTi0nm
Log of apache : https://pastebin.com/SSwyHymT

I've started working with LAVA. I installed on VirtualBox Debian stretch, as recommended. 
I want lava-server lava-master lava-slave on one machine and work locally. 
I provided next step for installing LAVA:

Add this lines to  /etc/apt/sources.list
deb http://deb.debian.org/debian stretch-backports main
deb https://apt.lavasoftware.org/release stretch-backports main

root# wget https://apt.lavasoftware.org/lavasoftware.key.asc 
root# apt-key add lavasoftware.key.asc
root# apt-get update
root# apt -t stretch-backports install lava-server
root# a2dissite 000-default
root# a2enmod proxy
root# a2enmod proxy_http
root# a2ensite lava-server.conf
root# service apache2 restart

After that I changed some parameters as written here : 
https://validation.linaro.org/static/docs/v2/installing_on_debian.html#using-localhost-or-non-https-instance-url
to run locally

I checked variables value 
http://54.68.224.33/static/docs/v2/pipeline-debug.html#displaying-current-settings
It is similar to what I set up.

root# lava-server manage check --deploy