heroku logs --tail error: sh: 1: nodemon: not found-CodePudding

I am trying to start my web app via heroku cli. after deploying I try heroku open. when I do, it shows me "Application fail" page where they provide a suggestion for me to run the command heroku logs --tail. I see a long list of executions where the first thing that crashes is the failure to find nodemon

the thing is, I can successfully run nodemon when i npm start locally. the problem happens when i heroku open.

heroku logs --tail results in the following:

2021-10-05T01:56:54.934519 00:00 app[web.1]: 
2021-10-05T01:56:54.938108 00:00 app[web.1]: sh: 1: nodemon: not found
2021-10-05T01:56:54.942920 00:00 app[web.1]: npm ERR! code ELIFECYCLE
2021-10-05T01:56:54.943131 00:00 app[web.1]: npm ERR! syscall spawn
2021-10-05T01:56:54.943211 00:00 app[web.1]: npm ERR! file sh
2021-10-05T01:56:54.943308 00:00 app[web.1]: npm ERR! errno ENOENT
2021-10-05T01:56:54.948219 00:00 app[web.1]: npm ERR! detectfaceappapiv1@1.0.0 start: `nodemon server.js`
2021-10-05T01:56:54.948271 00:00 app[web.1]: npm ERR! spawn ENOENT
2021-10-05T01:56:54.948334 00:00 app[web.1]: npm ERR!
2021-10-05T01:56:54.948383 00:00 app[web.1]: npm ERR! Failed at the detectfaceappapiv1@1.0.0 start script.
2021-10-05T01:56:54.948435 00:00 app[web.1]: npm ERR! This is probably not a problem with npm. There is likely additional logging output above.
2021-10-05T01:56:54.962550 00:00 app[web.1]:
2021-10-05T01:56:54.962668 00:00 app[web.1]: npm ERR! A complete log of this run can be found in:
2021-10-05T01:56:54.962697 00:00 app[web.1]: npm ERR!     /app/.npm/_logs/2021-10-05T01_56_54_949Z-debug.log
2021-10-05T01:56:55.104892 00:00 heroku[web.1]: Process exited with status 1
2021-10-05T01:56:55.183845 00:00 heroku[web.1]: State changed from starting to crashed
2021-10-05T03:15:45.740085 00:00 heroku[web.1]: State changed from crashed to starting
2021-10-05T03:15:47.727415 00:00 heroku[web.1]: Starting process with command `npm start`
2021-10-05T03:15:48.650607 00:00 app[web.1]:
2021-10-05T03:15:48.650704 00:00 app[web.1]: > detectfaceappapiv1@1.0.0 start /app
2021-10-05T03:15:48.650706 00:00 app[web.1]: > nodemon server.js
2021-10-05T03:15:48.650707 00:00 app[web.1]:
2021-10-05T03:15:48.662047 00:00 app[web.1]: sh: 1: nodemon: not found
2021-10-05T03:15:48.666240 00:00 app[web.1]: npm ERR! code ELIFECYCLE
2021-10-05T03:15:48.666406 00:00 app[web.1]: npm ERR! syscall spawn
2021-10-05T03:15:48.666477 00:00 app[web.1]: npm ERR! file sh
2021-10-05T03:15:48.666556 00:00 app[web.1]: npm ERR! errno ENOENT
2021-10-05T03:15:48.668678 00:00 app[web.1]: npm ERR! detectfaceappapiv1@1.0.0 start: `nodemon server.js`
2021-10-05T03:15:48.668725 00:00 app[web.1]: npm ERR! spawn ENOENT
2021-10-05T03:15:48.668776 00:00 app[web.1]: npm ERR!
2021-10-05T03:15:48.668823 00:00 app[web.1]: npm ERR! Failed at the detectfaceappapiv1@1.0.0 start script.
2021-10-05T03:15:48.668863 00:00 app[web.1]: npm ERR! This is probably not a problem with npm. There is likely additional logging output above.
2021-10-05T03:15:48.672520 00:00 app[web.1]:
2021-10-05T03:15:48.672592 00:00 app[web.1]: npm ERR! A complete log of this run can be found in:
2021-10-05T03:15:48.672626 00:00 app[web.1]: npm ERR!     /app/.npm/_logs/2021-10-05T03_15_48_669Z-debug.log
2021-10-05T03:15:48.789238 00:00 heroku[web.1]: Process exited with status 1
2021-10-05T03:15:48.830329 00:00 heroku[web.1]: State changed from starting to crashed
2021-10-05T04:54:45.976500 00:00 heroku[web.1]: State changed from crashed to starting
2021-10-05T04:54:48.314500 00:00 heroku[web.1]: Starting process with command `npm start`
2021-10-05T04:54:50.071787 00:00 app[web.1]:
2021-10-05T04:54:50.071800 00:00 app[web.1]: > detectfaceappapiv1@1.0.0 start /app
2021-10-05T04:54:50.071801 00:00 app[web.1]: > nodemon server.js
2021-10-05T04:54:50.071801 00:00 app[web.1]:
2021-10-05T04:54:50.079652 00:00 app[web.1]: sh: 1: nodemon: not found
2021-10-05T04:54:50.085454 00:00 app[web.1]: npm ERR! code ELIFECYCLE
2021-10-05T04:54:50.085719 00:00 app[web.1]: npm ERR! syscall spawn
2021-10-05T04:54:50.085859 00:00 app[web.1]: npm ERR! file sh
2021-10-05T04:54:50.086080 00:00 app[web.1]: npm ERR! errno ENOENT
2021-10-05T04:54:50.090304 00:00 app[web.1]: npm ERR! detectfaceappapiv1@1.0.0 start: `nodemon server.js`
2021-10-05T04:54:50.090391 00:00 app[web.1]: npm ERR! spawn ENOENT
2021-10-05T04:54:50.090480 00:00 app[web.1]: npm ERR!
2021-10-05T04:54:50.090562 00:00 app[web.1]: npm ERR! Failed at the detectfaceappapiv1@1.0.0 start script.
2021-10-05T04:54:50.090951 00:00 app[web.1]: npm ERR! This is probably not a problem with npm. There is likely additional logging output above.
2021-10-05T04:54:50.098509 00:00 app[web.1]:
2021-10-05T04:54:50.098701 00:00 app[web.1]: npm ERR! A complete log of this run can be found in:
2021-10-05T04:54:50.098774 00:00 app[web.1]: npm ERR!     /app/.npm/_logs/2021-10-05T04_54_50_092Z-debug.log
2021-10-05T04:54:50.259919 00:00 heroku[web.1]: Process exited with status 1
2021-10-05T04:54:50.632592 00:00 heroku[web.1]: State changed from starting to crashed
2021-10-05T09:12:32.734768 00:00 heroku[web.1]: State changed from crashed to starting
2021-10-05T09:12:35.155424 00:00 heroku[web.1]: Starting process with command `npm start`
2021-10-05T09:12:36.467495 00:00 app[web.1]:
2021-10-05T09:12:36.467505 00:00 app[web.1]: > detectfaceappapiv1@1.0.0 start /app
2021-10-05T09:12:36.467505 00:00 app[web.1]: > nodemon server.js
2021-10-05T09:12:36.467506 00:00 app[web.1]:
2021-10-05T09:12:36.477925 00:00 app[web.1]: sh: 1: nodemon: not found
2021-10-05T09:12:36.493189 00:00 app[web.1]: npm ERR! code ELIFECYCLE
2021-10-05T09:12:36.493573 00:00 app[web.1]: npm ERR! syscall spawn
2021-10-05T09:12:36.493747 00:00 app[web.1]: npm ERR! file sh
2021-10-05T09:12:36.493936 00:00 app[web.1]: npm ERR! errno ENOENT
2021-10-05T09:12:36.497717 00:00 app[web.1]: npm ERR! detectfaceappapiv1@1.0.0 start: `nodemon server.js`
2021-10-05T09:12:36.498844 00:00 app[web.1]: npm ERR! spawn ENOENT
2021-10-05T09:12:36.498951 00:00 app[web.1]: npm ERR!
2021-10-05T09:12:36.499039 00:00 app[web.1]: npm ERR! Failed at the detectfaceappapiv1@1.0.0 start script.
2021-10-05T09:12:36.499117 00:00 app[web.1]: npm ERR! This is probably not a problem with npm. There is likely additional logging output above.
2021-10-05T09:12:36.506402 00:00 app[web.1]:
2021-10-05T09:12:36.506477 00:00 app[web.1]: npm ERR! A complete log of this run can be found in:
2021-10-05T09:12:36.506548 00:00 app[web.1]: npm ERR!     /app/.npm/_logs/2021-10-05T09_12_36_500Z-debug.log
2021-10-05T09:12:36.659116 00:00 heroku[web.1]: Process exited with status 1
2021-10-05T09:12:36.751331 00:00 heroku[web.1]: State changed from starting to crashed
2021-10-05T14:43:53.915711 00:00 heroku[web.1]: State changed from crashed to starting
2021-10-05T14:43:56.228553 00:00 heroku[web.1]: Starting process with command `npm start`
2021-10-05T14:43:57.534046 00:00 app[web.1]:
2021-10-05T14:43:57.534087 00:00 app[web.1]: > detectfaceappapiv1@1.0.0 start /app
2021-10-05T14:43:57.534092 00:00 app[web.1]: > nodemon server.js
2021-10-05T14:43:57.534092 00:00 app[web.1]:
2021-10-05T14:43:57.549030 00:00 app[web.1]: sh: 1: nodemon: not found
2021-10-05T14:43:57.557412 00:00 app[web.1]: npm ERR! code ELIFECYCLE
2021-10-05T14:43:57.557713 00:00 app[web.1]: npm ERR! syscall spawn
2021-10-05T14:43:57.557808 00:00 app[web.1]: npm ERR! file sh
2021-10-05T14:43:57.557992 00:00 app[web.1]: npm ERR! errno ENOENT
2021-10-05T14:43:57.561619 00:00 app[web.1]: npm ERR! detectfaceappapiv1@1.0.0 start: `nodemon server.js`
2021-10-05T14:43:57.561706 00:00 app[web.1]: npm ERR! spawn ENOENT
2021-10-05T14:43:57.561794 00:00 app[web.1]: npm ERR!
2021-10-05T14:43:57.561875 00:00 app[web.1]: npm ERR! Failed at the detectfaceappapiv1@1.0.0 start script.
2021-10-05T14:43:57.561942 00:00 app[web.1]: npm ERR! This is probably not a problem with npm. There is likely additional logging output above.
2021-10-05T14:43:57.570261 00:00 app[web.1]:
2021-10-05T14:43:57.570325 00:00 app[web.1]: npm ERR! A complete log of this run can be found in:
2021-10-05T14:43:57.570363 00:00 app[web.1]: npm ERR!     /app/.npm/_logs/2021-10-05T14_43_57_563Z-debug.log
2021-10-05T14:43:57.714282 00:00 heroku[web.1]: Process exited with status 1
2021-10-05T14:43:57.777703 00:00 heroku[web.1]: State changed from starting to crashed

CodePudding user response：

Try changing your procfile to web: node myapp.js. It is also possible webpack is overriding your procfile. Check out the question and answer here: Heroku failing to start my node app because its trying to do it with nodemon

CodePudding user response：

After endless searching, I found a remedy that worked for me!

I followed the instructions from a youtube video: https://www.youtube.com/watch?v=xxua85cCiT0

create Procfile
make NPM_CONFIG_PRODUCTION=false OR move nodemon package from devDependencies to dependencies.
manually changed port to 8080