Web server not responding on AWS EC2 when sending larger http response

Hello,

I have my web application and webserver and they are working fine on my local Windows 10 machine. But when I run the same application on my EC2 instance server itself (again Windows 10) using the same web server, it doesn't work. Does ec2 have any restrictions with response size limit?

Here are more details about the problem:
https://stackoverflow.com/questions/69186276/django-application-and-apache-server-with-err-connection-reset-on-aws

I would be glad if I could some suggestions.

Thanks.

David