"Lost Connection" then "Unknown World" issue

[Duck]

tl;dr: I'm hosting a server, and at random times the server shuts down and displays "Lost Connection". When viewing the world later, it appears to have no name and has "Unknown World" in place of the world size. Issue happens often and annoying to reboot game and lose progress.

My friend and I have started a big Calamity modded playthrough. We started yesterday. All of the sudden, today we have been experiencing a wide variety of problems, forcing us to go to the point of having to reinstall Tmodloader.
We fixed our previous issues, however we have come across another one just a couple minutes ago.
While I'm playing, at random moments the server closes and the game tells me I have "Lost Connection". After this, when i go through character selection and look at the world i was playing it, the game displays the world with no title, and the space that is supposed to contain the world size has "Unknown World" in place of it. The only solution i could find (which is temporary) is to leave and re-enter the game. When trying to enter the bugged world, I get stuck in loading.
This happens about every 10 minutes in game and it is so frustrating having to constantly rejoin Tmodloader and having all of our progress wiped (the game isn't able to be saved when I am kicked). Also, I find it strange that I'M the host, yet I'M losing connection. I'm pretty certain that's not how it works. Can anyone offer a long term solution to this issue?

[₮Ø₳₴₮]

dunno how to fix your issue but ive always wondered what tl;dr means so can ye uhhhh tell me?

[Duck]

tl;dr means too long;didn't read.
--I have a feeling this is an issue relating to Tmodloader servers, so yeah I'll update this post if everything is fixed by now.
Edit- Whenever I leave the server, whether intentionally or by the "Lost Connection" issue, the world is read as "Unknown World". Fyi, the world doesn't corrupt, I just have to rejoin. However, some data does corrupt.

Edit 2: When i try to load the "unknown world" world on single player, it says load failed, backup not found.

[Fluxxation]

Random suggestion that worked when I used it: go into your documents>my games> terraria > mod loader> worlds folder in your documents app, then find the world you’ve made, copy the WLD file, and delete the old one. Then paste the new one, it just cleans it somehow, and the cool part is.. it saves at your current world status with builds, bosses and etc.

[Duck]

Originally posted by Fluxxation:

Random suggestion that worked when I used it: go into your documents>my games> terraria > mod loader> worlds folder in your documents app, then find the world you’ve made, copy the WLD file, and delete the old one. Then paste the new one, it just cleans it somehow, and the cool part is.. it saves at your current world status with builds, bosses and etc.

LOL i just returned to say that i've already fixed this issue with this exact solution! I'm so hype!! Ty btw!!

[Duck]

bruh nvm HAHA

[Duck]

should i delete twld.bak or wld.bak
-nvm, thank yall
-nevermind again omg i did the backup stuff but it still does the "lost connection" thing, and the world is shown to be unknown

[znk-]

poto

[Duck]

k so now the character im using is corrupting, having no name, appearing to have the default look, and having reset stats (according to character select). if i refresh the game my character returns. im not sure how to apply backups to characters

[Duck]

ok now when i try to load the world for multiplayer, i get stuck on "starting server"