USER CANT JOIN DEDICATED SERVER

So I recently started a dedicated server with a group of friends in alpha 20.6. I don't know why but very frecuently some ramdom player suddenly can't join anymore to the server. It has happened 3 times already. According to the logs, player succesfully logs into the server but cannot spawn. 

I've done my research and it looks like it is a common bug which involves a corrupted ttp file of the player.

Here's the output log: https://pastebin.com/b4vyzEBU

Here's the ttp file of the player: https://pastebin.com/MKEUEE6p

Player is named Kal-el

If you need any extra data or logs just tell me to do so.

Thx.