Connection terminated (4000, '')

Created by: GuerreroBit

Summary

Is normal this message?

[111 /ConnectionCl] [Crit ] Connection terminated (4000, ''), reconnecting

Details

The bot is on a console project with net5.0 (C# 8) and I publish it on a single file and execute it on Ubuntu 20.04. The error appears even when nothing is being done (I think). This error is not very important because it automatically reconnect, but it appears every ~1-2 hours (sometimes more) and flood the console

Notes

(I censure the numbers, I don't know if it's important)

[2021-07-10 15:15:28 +02:00] [109 /Heartbeat   ] [Trace] Sending heartbeat
[2021-07-10 15:15:28 +02:00] [119 /Gateway ↑   ] [Trace] {"op":1,"d":*****}
[2021-07-10 15:15:28 +02:00] [118 /Gateway ↓   ] [Trace] {"t":null,"s":null,"op":11,"d":null}
[2021-07-10 15:15:28 +02:00] [105 /WebSocketRec] [Trace] Received HEARTBEAT_ACK (OP11, 104ms)
[2021-07-10 15:15:30 +02:00] [118 /Gateway ↓   ] [Trace] {"t":null,"s":null,"op":7,"d":null}
[2021-07-10 15:15:30 +02:00] [105 /WebSocketRec] [Trace] Received RECONNECT (OP7)
[2021-07-10 15:15:30 +02:00] [111 /ConnectionCl] [Debug] Connection closed (4000, '')
[2021-07-10 15:15:30 +02:00] [111 /ConnectionCl] [Crit ] Connection terminated (4000, ''), reconnecting
[2021-07-10 15:15:30 +02:00] [101 /Startup     ] [Info ] DSharpPlus, version 4.1.0-nightly-00917
[2021-07-10 15:15:31 +02:00] [118 /Gateway ↓   ] [Trace] {"t":null,"s":null,"op":10,"d":{"heartbeat_interval":41250,"_trace":["[\"gateway-prd-main-9zhz\",{\"micros\":0.0}]"]}}
[2021-07-10 15:15:31 +02:00] [105 /WebSocketRec] [Trace] Received HELLO (OP10)
[2021-07-10 15:15:31 +02:00] [109 /Heartbeat   ] [Debug] Heartbeat task started
[2021-07-10 15:15:31 +02:00] [119 /Gateway ↑   ] [Trace] {"op":6,"d":{"token":"Bot *****","session_id":"*****","seq":******}}
[2021-07-10 15:15:31 +02:00] [109 /Heartbeat   ] [Trace] Sending heartbeat
[2021-07-10 15:15:31 +02:00] [119 /Gateway ↑   ] [Trace] {"op":1,"d":*****}
[2021-07-10 15:15:31 +02:00] [118 /Gateway ↓   ] [Trace] {"t":null,"s":null,"op":11,"d":null}
[2021-07-10 15:15:31 +02:00] [105 /WebSocketRec] [Trace] Received HEARTBEAT_ACK (OP11, 98ms)
[2021-07-10 15:15:31 +02:00] [118 /Gateway ↓   ] [Trace] {"t":"RESUMED","s":404,"op":0,"d":{"_trace":["[\"gateway-prd-main-9zhz\",{\"micros\":1985,\"calls\":[\"discord-sessions-blue-prd-2-87\",{\"micros\":16}]}]"]}}
[2021-07-10 15:15:31 +02:00] [103 /SessionUpdat] [Info ] Session resumed

Some code of my Bot: https://gist.github.com/GuerreroCraft61/9b8a7fddc28cbc19658b1a2460b1aa2d (When this error appear, I'm 99% sure there is no interaction on the server)