Too many errors - heroku

Question

This is the error I start with:
npm ERR! missing script: start
npm ERR! A complete log of this run can be found in:
npm ERR! /app/.npm/_logs/2020-08-10T10_15_35_198-debug.log
then continues from this
State changed from crashing to starting
Starting process with command `node idex.js`
State changed from starting to up
Process exited with status 1
State changed from up to crashed
still...
ReferenceError: client is not defined
at Object.<anonymous> (/app/music.js:10:1)
at Module._compile (internal/modules/cjs/loader.js:1137:20)
at Object.Module._extensions..js (internal/modules/cjs/loader.js:1157:100
at Module.load (internal/modules/cjs/loader.js:985:32)
at Function.Module._load (internal/modules/cjs/loader.js:878:14)
at Module.require (internal/modules/cjs/loader.js:1025:19)
at require (internal/modules/cjs/helpers.js:72:18)
at Object.<anonymous> (/app/index.js:9:11)
at Module._compile (internal/modules/cjs/loader.js:1137:30)
at Object.Module._extensions..js (internal/modules/cjs/loader.js:1157:10)
What should I do?

Answer 1

missing script: start
You're probably using npm start [script].
You need to configure your package.json "scripts" object.
It requires a "start": "your/file" in the "scripts" object, to start with.
Here's an example.
"scripts": {
"test": "echo \"Error: no test specified\" && exit 1",
"start": "nodemon src/server.js",
"dev": "src/server.js"
}
client is not defined
In music.js, line 10, you have a variable client that hasn't seemed to be defined, thus it is unable to access it.
All this leads to your file being unable to start and crashing constantly, which is shown in your second image.