When instance is empty, my server enters a sleep mode that crashes it

OS Name/Version:Proteus

Product Name/Version: v2.8.0.4

Problem Description:

When my Minecraft Instance goes into sleep mode after 5 minutes (I set when no one is inside) It goes into this state of like phantom sleep it almost like how I can describe..Crashes amp on my Ubuntu, people can not wake it up when joining, and I have to manually come in here and restart everything in Ubuntu Console. Everybody connects through playit.gg I dont have an open mc server. 

Steps to reproduce:

Turn on the VM

Amp wakes up

Amp starts my Minecraft instance

It starts

Goes to sleep after 5 minutes when no one joins

When going into sleep mode, it “breaks”.

Actions taken to resolve so far:

Configuration > Minecraft > Sleep Mode > Turn off “Enable sleep mode”