https traffic is not coming. through while http works

I am trying o setup a webserver on an EC2 instance and then I have added the domain via route 53 and also cerated a app load balancer and added lsiteners via http and https (where I used certificate for that domain via ACM) - while http traffic is coming through, httsp traffic is not coming through and when I do this on the command line it gives me this error suggesting some security rule not alowing me inside

openssl s_client -connect api.somedomain.com:443 4638666240:error:0200203D:system library:connect:Connection refused:crypto/bio/b_sock2.c:110: 4638666240:error:2008A067:BIO routines:BIO_connect:connect error:crypto/bio/b_sock2.c:111: connect:errno=61

and on the browser when I access as https://api.somedomain.com, I get the error as (on chrome) ERR_CONNECTION_REFUSED

the ceritificate i have taken only with api.somedomain.com and I have sent rules only to this specific domain oly --> api.somedomain.com any idea or help on what rule is preventing the https traffic to flow? Thanks in advance