Setup2/2 Warming Cache - Invalid Response from Server

Hi,

Getting Invalid Response from Server while installing Partkeepr at Setup 2/2 stage. Setup: Ubuntu 16.04 x64 VM runs on Hyper-V PHP 7.0.13-0ubuntu0.16.04.1 (cli) ( NTS ) mysql Ver 14.14 Distrib 5.7.12 Chrome 55.0.2883.87 max_execution_time=120

I would like to add that the same error i had once installed on physical machine with high RAM and CPU and SSD disk speeds.

The only warning i got is the php-apcu not installed.

Installed using this guide, and the official one. Added logs, zipped three files: setup, dev & setup_test that I've found at: app/logs/*

Not sure what else to provide. Please advise!

EDIT: When restarting Setup 2/2, using iotop command i see mysql and apache services using Disk IO for several seconds - like 5 or 10 not sure, then nothing else appears on the screen. Looks like it does the caching but then goes stuck on some stage. Any points where should i look for where it hangs?

EDIT2: Screenshot showing Chrome debug I suppose that i should have this access error since this is Partkeepr testing access to logs.