Nginx the event was not signaled for 5s - node.js

Question

I am hosting my web application on NGINX server.Till now it worked fine, but I don't know why I am getting the errors present in the image below.
I don't know why these errors occur, but as a trial and error method I thought my ssl certificated got expired so I updated it. Same errors got repeated.And also checked my conf.d file, not sure that everything is good.
Here is my conf file
worker_processes 1;
events {
worker_connections 1024;
}
http {
include mime.types;
default_type application/octet-stream;
sendfile on;
send_timeout 100s;
keepalive_timeout 95;
#ssl_session_cache shared:SSL:10m;
#ssl_session_timeout 10m;
client_body_in_file_only clean;
client_body_buffer_size 32K;
client_max_body_size 300M;
server {
listen 80;
listen 443 ssl;
server_name sample.com;
ssl_certificate ..\ssl\mbxxxx.crt;
ssl_certificate_key ..\ssl\mbkey.pem;
ssl_protocols TLSv1 TLSv1.1 TLSv1.2;
location / {
proxy_http_version 1.1;
client_max_body_size 300M;
proxy_read_timeout 300s;
proxy_connect_timeout 95s;
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Host $host;
proxy_cache_bypass $http_upgrade;
proxy_set_header X-Real-IP $http_referer;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header content-type "application/json";
proxy_set_header X-NginX-Proxy true;
proxy_set_header X-Forwarded-Proto $scheme;
proxy_set_header REMOTE_ADDR $remote_addr;
proxy_set_header Access-Control-Allow-Origin *;
proxy_set_header Connection 'upgrade';
proxy_pass http://127.0.0.1:xxxx;
}
location /api {
proxy_http_version 1.1;
client_max_body_size 300M;
proxy_read_timeout 300s;
proxy_connect_timeout 95s;
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Host $host;
proxy_cache_bypass $http_upgrade;
proxy_set_header X-Real-IP $http_referer;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header content-type "application/json";
proxy_set_header X-NginX-Proxy true;
proxy_set_header X-Forwarded-Proto $scheme;
proxy_set_header REMOTE_ADDR $remote_addr;
proxy_set_header Access-Control-Allow-Origin *;
proxy_set_header Connection 'upgrade';
proxy_pass http://127.0.0.1:xxxx;
}
error_page 405 =200 $uri;
# error_page 500 502 503 504 /50x.html;
#location = /50x.html {
#root html;
#}
}
}
enter code here
And there are no CORS restrictions.Any suggestions and reference docs would be great help.
And I don't know that this question servers my request or not.
Thanks in Advance.

Answer 1

So when I am doing some research on how to solve this issue, I found an answer that I have to remove passphrase in SSL certificate.I didn't get it. So what I have done is, I updated SSL certificate then I run my application. But not succeeded. So I thought nginx should be restarted after updating SSL certificate. Shockingly after restarting nginx, it worked fine.

Answer 2

You can specify passphrase in text file, and connect it via ssl_password_file directive. Something like this:
listen 3001 ssl;
ssl_certificate cert.pem;
ssl_certificate_key key.pem;
ssl_password_file pass.txt