Server crashing - Skipping ticks

[mtuit]

Bug Report

The server keeps crashing (seemingly) randomly. It happens when only 1 person is online, but also when 3 persons are playing (this is the max number of players). There is no real clear indication of to why this happens. Sometimes it crashes multiple times in short intervals, sometimes it doesn't crash for a longer time (4-5 hours).

Expected Behaviour

The server kicks out players, saying the remote actively refused connection. Expected behaviour is obviously to not do this.

Logs

• Latest.log: https://pastebin.com/bXH283pm
• Debug.log: https://pastebin.com/jVL3Giku
• Crash Log: None

World Information

• Preset: Sky Factory 4
• Prestige: No
• Modpack Version world created in: Sky Factory 4.1.0
• Additional Content Installed: No

Client Information

• Modpack Version: Sky Factory 4, 4.1.0
• Java Version: 13.0.1
• Launcher Used: Twitch
• Memory Allocated: 5120 MB
• Server/LAN/Single Player: Server
• Optifine Installed: No
• Shaders Enabled: No

Server Information

• Java Version: 1.8.0_242
• Operating System: Linux
• Hoster/Hosting Solution: Google Cloud Platform (n1-standard-2 (2 vCPUs, 7.5 GB memory), Debian, Debian GNU/Linux, 9 (stretch), amd64 built on 20200309 )
• Sponge (Non-Vanilla Forge) Server: No

[sam-kirby]

The server logs provided are truncated to the point of being unreadable. They indicate players leaving before they ever joined. From the limited information available, however, the server does not report initiating the breaking of the connection. It seems to suggest the client left normally (lost connection: Disconnected)

Perhaps the issue is on the client side? Could you please provide complete logs from a client. Please also update the client information listed. It is not possible to run Forge for 1.12.2 using Java 13.