Cannot find module '/app/dist/src/index.js' error in heroku - node.js

Question

{
"name": "bookingevents",
"version": "1.0.0",
"description": "",
"main": "./src/index.ts",
"scripts": {
"postinstall": "tsc",
"start": "node dist/src/index.js",
"dev": "ts-node-dev src/index.ts",
"build": "tsc"
},
"keywords": [],
"author": "mahmoudAlBaghdady",
"license": "ISC",
"devDependencies": {
"#types/cors": "^2.8.12",
"#types/express": "^4.17.13",
"#types/mongoose": "^5.11.97",
"#types/morgan": "^1.9.3",
"#types/node": "^17.0.41",
"ts-node-dev": "^2.0.0",
"typescript": "^4.7.3"
},
"dependencies": {
"#types/axios": "^0.14.0",
"#types/bcryptjs": "^2.4.2",
"#types/body-parser": "^1.19.2",
"#types/express-graphql": "^0.9.0",
"#types/graphql": "^14.5.0",
"#types/jsonwebtoken": "^8.5.8",
"#types/react-calendar": "^3.5.1",
"axios": "^0.27.2",
"bcryptjs": "^2.4.3",
"body-parser": "^1.20.0",
"cloudinary": "^1.30.1",
"cors": "^2.8.5",
"dotenv": "^16.0.1",
"express": "^4.18.1",
"express-async-handler": "^1.2.0",
"express-graphql": "^0.12.0",
"graphql": "^15.8.0",
"jsonwebtoken": "^8.5.1",
"morgan": "^1.10.0",
"react-calendar": "^3.7.0"
}
}
this is my package.json
Procfile
web: npm start
and this is the error I'm getting from heroku
2022-08-25T05:20:04.090743+00:00 heroku[web.1]: State changed from crashed to starting
2022-08-25T05:20:06.797284+00:00 heroku[web.1]: Starting process with command npm start
2022-08-25T05:20:09.300554+00:00 heroku[web.1]: Process exited with status 1
2022-08-25T05:20:09.452051+00:00 heroku[web.1]: State changed from starting to crashed
2022-08-25T05:20:09.075632+00:00 app[web.1]:
2022-08-25T05:20:09.075643+00:00 app[web.1]: > bookingevents#1.0.0 start
2022-08-25T05:20:09.075643+00:00 app[web.1]: > node dist/src/index.js
2022-08-25T05:20:09.075643+00:00 app[web.1]:
2022-08-25T05:20:09.136536+00:00 app[web.1]: node:internal/modules/cjs/loader:959
2022-08-25T05:20:09.136538+00:00 app[web.1]: throw err;
2022-08-25T05:20:09.136538+00:00 app[web.1]: ^
2022-08-25T05:20:09.136539+00:00 app[web.1]:
2022-08-25T05:20:09.136539+00:00 app[web.1]: Error: Cannot find module '/app/dist/src/index.js'
2022-08-25T05:20:09.136540+00:00 app[web.1]: at Function.Module._resolveFilename (node:internal/modules/cjs/loader:956:15)
2022-08-25T05:20:09.136540+00:00 app[web.1]: at Function.Module._load (node:internal/modules/cjs/loader:804:27)
2022-08-25T05:20:09.136541+00:00 app[web.1]: at Function.executeUserEntryPoint [as runMain] (node:internal/modules/run_main:81:12)
2022-08-25T05:20:09.136541+00:00 app[web.1]: at node:internal/main/run_main_module:17:47 {
2022-08-25T05:20:09.136541+00:00 app[web.1]: code: 'MODULE_NOT_FOUND',
2022-08-25T05:20:09.136542+00:00 app[web.1]: requireStack: []
2022-08-25T05:20:09.136542+00:00 app[web.1]: }
it isn't working in any way I've been trying for hours
and if someone solved it can you please explain it to me thanks alot