Nginx container exit 137 error - tcp4 0.0.0.0:443: bind: address already in use

1. What is the issue? Please be detailed.
Over night our EC2 instance was unreachable. I rebooted it, it is now online but we have a certificate error on the web page. Looking further at the issue I can see the nginx container has not started and is showing an exit 137 error.

            Name                          Command                State      Ports  
-----------------------------------------------------------------------------------
central_enketo_1               docker-entrypoint.sh /bin/ ...   Up         8005/tcp
central_enketo_redis_cache_1   docker-entrypoint.sh redis ...   Up         6379/tcp
central_enketo_redis_main_1    docker-entrypoint.sh redis ...   Up         6379/tcp
central_mail_1                 /bin/entrypoint.sh exim -b ...   Up         25/tcp  
central_nginx_1                /bin/bash /scripts/odk-set ...   Exit 137           
central_postgres_1             docker-entrypoint.sh postgres    Up         5432/tcp
central_pyxform_1              gunicorn --bind 0.0.0.0:80 ...   Up                 
central_secrets_1              docker-entrypoint.sh ./gen ...   Exit 0             
central_service_1              docker-entrypoint.sh ./wai ...   Up         8383/tcp

When trying to restart it I get this error

ERROR: for central_nginx_1  Cannot restart container 7f1fca516f69b99fa379b664e836f31aea44f769ce2cfdf71a928cfb51dba2aa: driver failed programming exter
nal connectivity on endpoint central_nginx_1 (0725789bd4ac6aec50769d44e86b7f8db139dac03a2022c134de8c5a2c247a7e): Error starting userland proxy: listen
 tcp4 0.0.0.0:443: bind: address already in use

3. What have you tried to fix the issue?
It looks like something else is using port 443 but I can't locate it or it is not clear to me as this is not my area of specialism. I used this command to check. # sudo ss -tulnap | grep :443 and this is what came back.

tcp   LISTEN     0      511               0.0.0.0:443             0.0.0.0:*      users:(("nginx",pid=628,fd=9),("nginx",pid=627,fd=9),("nginx",pid=578
,fd=9))   
tcp   ESTAB      0      3192         172.30.0.234:443      41.223.116.242:23407  users:(("nginx",pid=627,fd=15))                                      
          
tcp   TIME-WAIT  0      0            172.30.0.234:443      197.221.240.26:47242                                                                       
          
tcp   TIME-WAIT  0      0            172.30.0.234:443      197.221.240.26:47248                                                                       
          
tcp   TIME-WAIT  0      0            172.30.0.234:443      45.214.226.175:46078                                                                       
          
tcp   TIME-WAIT  0      0            172.30.0.234:443       41.204.44.174:29129                                                                       
          
tcp   ESTAB      0      0            172.30.0.234:443     197.221.254.102:16451  users:(("nginx",pid=627,fd=14))                                      
          
tcp   FIN-WAIT-1 0      1            172.30.0.234:443       41.223.117.78:39009                                                                       
          
tcp   ESTAB      0      4580         172.30.0.234:443      197.221.240.26:47250  users:(("nginx",pid=627,fd=13))                                      
          
tcp   TIME-WAIT  0      0            172.30.0.234:443      197.221.240.26:47246                                                                       
          
tcp   TIME-WAIT  0      0            172.30.0.234:443      197.221.240.26:47244                                                                       
          
tcp   TIME-WAIT  0      0            172.30.0.234:443      45.213.146.119:44636                                                                       
          
tcp   LISTEN     0      511                  [::]:443                [::]:*      users:(("nginx",pid=628,fd=8),("nginx",pid=627,fd=8),("nginx",pid=578
,fd=8))   
ubuntu@ip-172-30-0-234:~$ 

I'd really appreciate some help please as I am stuck. Let me know if you need more information

Thanks,
Tony

@Tony_Rafferty It sounds like this issue was resolved? For the benefit of the community, can you tell us what you did to resolve it?