How to Fix SSL Issues with AWS ALB and Spring Boot?

Hey everyone! I'm currently working with AWS SSL for a Spring Boot application running in Docker on an EC2 instance. I've set up an Elastic IP for my EC2, created an Application Load Balancer (ALB), and generated a certificate using AWS Certificate Manager (ACM). I've also ensured that my security group allows traffic on the HTTPS port. However, when I try to access my ALB using its DNS, I see a message indicating that the connection is not secure. The certificate details look okay, showing a common name of 'Amazon RSA 2048 M03'. My target group is correctly mapped to port 443 and my load balancer listener is set to use HTTPS on that port as well. What am I missing to make my load balancer show up as secure? Any help would be greatly appreciated!