我有一个在 EC2 实例上运行的 Nodejs 应用程序。我使用 Ubuntu 服务器 18.04 和节点版本 v16.x 使用以下链接安装了 Web 应用程序：
节点安装指南 v16.x
为了运行该项目，我使用了以下教程：教程链接
我面临的问题是，当我运行启动命令 npm start 时，我的应用程序使用端口 3000 在服务器上启动。但是每当我打开 AWS 提供的链接时，在我的例子中是： https://ec2-3-72-79-132.eu-central-1.compute.amazonaws.com 它没有响应。我看到了一些类似的问题，最常见的答案是编辑我所做的入站安全组。
但它仍然不起作用。我还尝试仅使用 http 访问链接，如下所示：
http://ec2-3-72-79-132.eu-central-1.compute.amazonaws.com:3000 但它仍然不起作用。任何帮助将不胜感激，因为我花了 2 天的时间来解决这个问题，但我发现我没有取得任何进展。
I have a nodejs app running on an EC2 instance. I installed the webapp using Ubuntu server 18.04 and node version v16.x using this link:
Node installation guide v16.x
To run the project I used the following tutorial: Tutorial link
The problem I am facing is that when I run the starting command npm start my app launches on the server using port 3000. But whenever I open the link provided from AWS which in my case is : https://ec2-3-72-79-132.eu-central-1.compute.amazonaws.com it doesn't respond. I saw some similar questions and most common answers were to edit the inbound security groups which I did.
But it still doesn't work. I also tried to access the link with http only like this:
http://ec2-3-72-79-132.eu-central-1.compute.amazonaws.com:3000 but it still doesn't work. Any help will be highly appreciated, because I spent 2 days struggling with this issue and I see that I don't make any progress.
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