pg_ctl: directory "/var/lib/postgresql/10/main" is not a database cluster directory

I'm following this guide to do a replica server using postgres, I already made everything in a shell to automate it and seems fine, until I get to this command

pg_basebackup -h 192.168.1.103 -D /var/lib/postgresql/10/main -P -U replication

which I rewrote as

sudo -H -u postgres bash -c "pg_basebackup -h 192.168.1.103 -D /var/lib/postgresql/10/main/ -P -U replication"

However right when my shell gets to run that command linux suddenly just keeps working... for around 3 minutes until it gives up, the shell resumes the script and ends the job, needless to say the command that gets stuck didn't get me the folder I was asking on from the primary server to the secondary server, the postgres log file shows me this:

pg_ctl: directory "/var/lib/postgresql/10/main" is not a database cluster directory

Running

pg_lsclusters

gets me

 Ver Cluster Port Status Owner Data directory Log file 10 main 5433 online postgres /var/lib/postgresql/10/main /var/log/postgresql/postgresql-10-main.log

So I'm clueless of what to do next since I can't find information about this error online

However I'm clueless of what to do next

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