Can't access the application (firewall)

Hi everyone,

I try to install and use metabase but I have a problem.
I run the jar file and I try to setup my Metabase Installation by using the url :
but I have a blank page.

I’m on Centos 7.
Thanks in advance

What’s the log on your console?

Could something be blocking your port 3000?

What’s the response if you do curl http://localhost:3000

thanks for your answer.
I found out the problem.
I had to add this rule : iptables -A INPUT -p tcp --dport 3000 --jump ACCEPT

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