I can see in the NGINX log file (included in the bnsupport bundle) that there is an error trying to open the file
/opt/bitnami/nginx/conf/server.crt, due to it not existing. I can also see that this file exists but it's a symbolic link to another file inside
/etc/lego/certificates/, so it's possible that it's this target file the one not existing.
Could you please ensure that the
/etc/lego/certificates directory includes a
.crt file for your domain? Also, could you please provide us with some more details about the steps you ran to renew the certificate?