I am facing the nginx error! How to solve this problem?

Question

Facing this issues
Having two instances connected with load balancers, I have created the API in Codeigniter.

APIs sometimes fail to work and print this error message
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nginx error!
The page you are looking for is temporarily unavailable. Please try again later.
Website Administrator
Something has triggered an error on your website. This is the default error page for nginx that is distributed with the Amazon Linux AMI. It is located at /usr/share/nginx/html/50x.html

You should customize this error page for your own site or edit the error_page directive in the nginx configuration file /etc/nginx/nginx.conf.
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I don't Know what is  issue, Please help me to solve this problem.

Answer

From the message you shared with us, it looks like it is reaching EC2.  
Can you please check the Nginx error log and share any suspicious logs?

I am facing the nginx error! How to solve this problem?

APIs sometimes fail to work and print this error message

You should customize this error page for your own site or edit the error_page directive in the nginx configuration file /etc/nginx/nginx.conf.

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