Can't ssh to tryhackme server

Question

I am new to pentesting and so I am doing some tasks on tryhackme for learning the basics of Linux and so when I try to connect to an ssh server :

ssh [email protected]                
The authenticity of host '10.8.150.23 (10.8.150.23)' can't be  established.
ECDSA key fingerprint is 
SHA256:5mSp6dwM2HeSewbWzIVJ2GV4bRUmbrdS0ZX8qMRPjfU.
Are you sure you want to continue connecting (yes/no   /[fingerprint])? yes
Failed to add the host to the list of known hosts (/home/user/.ssh/known_hosts).
[email protected]'s password: 
Permission denied, please try again.
[email protected]'s password: 

it gives me an authentication error(even though I am typing the correct password which is shiba1) btw this question is not a duplicate of ssh connection refused : tryhackme Learn Linux walkthrough Does anyone know what's the problem.
Btw, you can find the room at the following link:
https://tryhackme.com/room/zthlinux
home/user/.ssh/known_hosts stores the host names

question from:https://stackoverflow.com/questions/65885731/cant-ssh-to-tryhackme-server