Error when installing application on Linux: items discared?

Question

Steam

Tipo did everything the rules, installed everything. Created a user connected and entered this command

./steamcmd.sh [email protected] 32 +login "login" "pass" +force_install_dir ../unturned +app_update 304930 validate +exit

Next comes this error:

ERROR! Failed to install app '304930' (No subscription)
CWorkThreadPool::~CWorkThreadPool: work processing queue not empty: 2 items discarded.
CWorkThreadPool::~CWorkThreadPool: work processing queue not empty: 3 items discarded.

I tried to act from root rights, but the connection is still loading, user info and the application is not installed error.
Thank you.