Apache Domain Name routing issue

Job ID: 33512267

Budget: $10 – $30 USD

I'm running an ubuntu server hosting a php project on aws, While I am able to access the project through public ip, I can't access the same via Domain Name( 403 forbidden). I have searched enough but cant find the specific root cause. I am look for some to guide me and fix the issue.
Related categories: PHP Linux Amazon Web Services Web Hosting Ubuntu