I can't join the server due to some some reason, Shows server internal error, tried reinstalling the server but didn't help or some times it shows connection reset by peers. Even though if I join with insane luck, and get myself op I can't run any of the in-game commands and it shows unknown command for very basic things like /help /gamemode etc.. Log : https://mclo.gs/Si11UvN
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Do you use T-Launcher ?
uh yes
I can connect to all servers with except those with server software as forge, it started when I downloaded player data then re-installed world and uploaded the player data as well [ as zip ] from then I am unable to join any of the forge servers at aternos, but I can join others servers vanilla, spigot..
this is the error it shows when I use any command [ /help ] after a while I get disconnected and from then it shows server internal error
New logs of a different server : https://mclo.gs/XGUZmYG and yes I also removed almost 25 mods
and if I die, it shows you died every few seconds after re-spawning
Try removing JourneyMap Mod.
"Always create a backup before doing any kinda stuff"
didn't work 
But you said you can't join your server?
Now you're saying you're die-ing in your server?
Sounds Weird.
yes after I reinstalled launcher, I was able to join for a min, and later shows internal error
