Solve the problem of "ERR_EMPTY_RESPONSE" error when opening the website

Today, some netizens reported an error when they opened his website“ ERR_EMPTY_RESPONSE ". Of course, his website has an SSL certificate. It can be opened without using HTTPS to encrypt the URL in the server. If it uses SSL, it cannot be opened. It seems that it is caused by the failure of configuring SSL. Here, Lao Zuo will help him troubleshoot the problem.

1. Check port

Here we check whether port 443 is enabled on his server. He uses the pagoda panel. Check whether the background port 443 of the pagoda panel is turned on. Lao Zuo saw that it was enabled, and then checked whether there was a security group on the server.

2. Test port

Here, both the server security group and port 443 of the server are enabled. However, through the PING test, it is found that the port is still blocked. It seems that which port is actually opened, but it is not unblocked. Here I delete the port of the server, and then add the pagoda panel again to check whether it is unblocked.

PS: If you encounter such a problem, you can delete port 443 on the pagoda panel and add it again.

3. Reconfigure SSL

Here I finally reconfigure the SSL certificate for his website, and the website can be opened.