Unhandled rejection SequelizeConnectionError: connect ENOENT - node.js

I am stuck at a point. I am trying to start /connect using command "npm start" but unable to start npm on server.
I am getting this error:
Unhandled rejection SequelizeConnectionError: connect ENOENT
at Handshake._callback (/home/ec2-user/webapps/vactivity/node/vactivity/node_modules/sequelize/lib/dialects/mysql/connection-manager.js:63:20)
at Handshake.Sequence.end (/home/ec2-user/webapps/vactivity/node/vactivity/node_modules/mysql/lib/protocol/sequences/Sequence.js:96:24)
at Protocol.handleNetworkError (/home/ec2-user/webapps/vactivity/node/vactivity/node_modules/mysql/lib/protocol/Protocol.js:358:14)
at Connection._handleNetworkError (/home/ec2-user/webapps/vactivity/node/vactivity/node_modules/mysql/lib/Connection.js:382:18)
at Socket.emit (events.js:95:17)
at net.js:441:14
at process._tickCallback (node.js:442:13)
Apart from this my website work on nodejs & have nginx server configured on server.
Every thing started when I tried to set apache for adding a wordpress blog website. Since nginx already working on port 80. I was trying to set apache on another port so that everything work and ended up with above error. Now my website is not starting at all.
Edit:
My website is running using nodejs. I needed a wordpress blog website to run along and so i checked if there is a scope for apache on my server.
I found that apache along with nginx service was already running and mysql as well.
nginx is essential to run "adminer", a database management tool
Since nginx and apache was running on same ports, i tried to set apache on another port, other than default port.
After that I restarted apache, stopped mysql, stopped nginx and also stopped node
I used pkill node command for stopping node service.
Then restarted everything but got the above error.
I tried many things, and finally reset everything.
Ever since then I am stuck on this error.
Can anyone help?

I finally figured the problem and solved it.
Connect ENOENT means that system is unable to connect to mysql because its path is not correct.
As mentioned in an approved answer from Connect MySQL with Sequelize
Update your models/index.js file with the mentioned code.
To find you mysql socket path go to file here /etc/mysql/my.cnf ( this path may depend on your server). For my case it was /etc/my.cnf. Here you will find the socket path. Now paste this path to the code above and do npm start.
Problem is resolved. :)

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Error on npm start on Azure - EADDRNOTAVAIL

I'm trying to get a nodejs app running on Azure (which runs perfectly fine on Heroku).
After running npm start on the app, the following error happens:
Error: connect EADDRNOTAVAIL 127.0.0.1 - Local (0.0.0.0:56256)
at internalConnect (net.js:907:16)
at defaultTriggerAsyncIdScope (internal/async_hooks.js:301:12)
at net.js:998:9
at processTicksAndRejections (internal/process/task_queues.js:75:11) {
errno: 'EADDRNOTAVAIL',
code: 'EADDRNOTAVAIL',
syscall: 'connect',
address: '127.0.0.1'
}
I've tried setting various ports which are free, but no matter what, I get this error.
UPDATE
I know that your current program runs normally in Heroku, and it runs very well locally.
But what I want to tell you is that in azure webapp, there is no need to execute the npm start command to start the webapp. After you pass the deployment, you can set the Startup Command in the portal to start your application. For general nodejs projects, the startup command is npx serve -s.
So you said that the execution of npm start produces an error. If you execute this start command in kudu, it is inappropriate.
If an error occurs when running locally, such as connect EADDRNOTAVAIL 127.0.0.1-Local (0.0.0.0:56256), it is recommended that you use netstat -ano|findstr "56256" to check which process uses the port and deal with.
PRIVIOUS
You need to macke sure use process.env.PORT || 3000 in your project. And you need to know, the port in azure webapp just support 80 and 443. So in your project, So in your code, there can only be one PORT value. After deployed, 443 and 80 will work.
And you can run your app perfectly on HeroKu. So I suggest you upload your code to github.
Then you can deploy your webapp by git. And your issue will be solved. If also have error when deploy, you can check the error in Action on git.

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This could probably be very stupid and naive question, but I have tried all my ways to find the solution, but I'm unable to solve. Hope anyone can solve my problem. Thanks in advance.
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at errnoException (net.js:905:11)
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