error heroku

PS D:\Lets Code\aliproj\smartbrain-api> heroku logs --tail
2019-03-29T05:40:37.128646+00:00 heroku[web.1]: Starting process with command `npm start`
2019-03-29T05:40:40.958441+00:00 heroku[web.1]: State changed from starting to crashed
2019-03-29T05:40:40.972491+00:00 heroku[web.1]: State changed from crashed to starting
2019-03-29T05:40:40.938919+00:00 heroku[web.1]: Process exited with status 1
2019-03-29T05:40:40.739396+00:00 app[web.1]:
2019-03-29T05:40:40.739441+00:00 app[web.1]: > smartbrain-api@1.0.0 start /app
2019-03-29T05:40:40.739449+00:00 app[web.1]: > nodemon server.js
2019-03-29T05:40:40.739451+00:00 app[web.1]:
2019-03-29T05:40:40.789011+00:00 app[web.1]: sh: 1: nodemon: not found
2019-03-29T05:40:40.794639+00:00 app[web.1]: npm ERR! file sh
2019-03-29T05:40:40.795223+00:00 app[web.1]: npm ERR! code ELIFECYCLE
2019-03-29T05:40:40.795910+00:00 app[web.1]: npm ERR! errno ENOENT
2019-03-29T05:40:40.796557+00:00 app[web.1]: npm ERR! syscall spawn
2019-03-29T05:40:40.798903+00:00 app[web.1]: npm ERR! smartbrain-api@1.0.0 start: `nodemon server.js`
2019-03-29T05:40:40.799220+00:00 app[web.1]: npm ERR! spawn ENOENT
2019-03-29T05:40:40.799643+00:00 app[web.1]: npm ERR!
2019-03-29T05:40:40.799953+00:00 app[web.1]: npm ERR! Failed at the smartbrain-api@1.0.0 start script.
2019-03-29T05:40:40.800249+00:00 app[web.1]: npm ERR! This is probably not a problem with npm. There is likely additional logging output above.
2019-03-29T05:40:40.809685+00:00 app[web.1]:
2019-03-29T05:40:40.810024+00:00 app[web.1]: npm ERR! A complete log of this run can be found in:
2019-03-29T05:40:40.810266+00:00 app[web.1]: npm ERR!     /app/.npm/_logs/2019-03-29T05_40_40_802Z-debug.log
2019-03-29T05:40:43.234587+00:00 heroku[web.1]: Starting process with command `npm start`
2019-03-29T05:40:45.123904+00:00 heroku[web.1]: State changed from starting to crashed
2019-03-29T05:40:44.964185+00:00 app[web.1]:
2019-03-29T05:40:44.964218+00:00 app[web.1]: > smartbrain-api@1.0.0 start /app
2019-03-29T05:40:44.964220+00:00 app[web.1]: > nodemon server.js
2019-03-29T05:40:44.964222+00:00 app[web.1]:
2019-03-29T05:40:44.972642+00:00 app[web.1]: sh: 1: nodemon: not found
2019-03-29T05:40:44.977097+00:00 app[web.1]: npm ERR! file sh
2019-03-29T05:40:44.977334+00:00 app[web.1]: npm ERR! code ELIFECYCLE
2019-03-29T05:40:44.977517+00:00 app[web.1]: npm ERR! errno ENOENT
2019-03-29T05:40:44.977695+00:00 app[web.1]: npm ERR! syscall spawn
2019-03-29T05:40:44.978909+00:00 app[web.1]: npm ERR! smartbrain-api@1.0.0 start: `nodemon server.js`
2019-03-29T05:40:44.979030+00:00 app[web.1]: npm ERR! spawn ENOENT
2019-03-29T05:40:44.979316+00:00 app[web.1]: npm ERR!
2019-03-29T05:40:44.979487+00:00 app[web.1]: npm ERR! Failed at the smartbrain-api@1.0.0 start script.
2019-03-29T05:40:44.979622+00:00 app[web.1]: npm ERR! This is probably not a problem with npm. There is likely additional logging output above.
2019-03-29T05:40:44.984620+00:00 app[web.1]:
2019-03-29T05:40:44.984760+00:00 app[web.1]: npm ERR! A complete log of this run can be found in:
2019-03-29T05:40:44.984834+00:00 app[web.1]: npm ERR!     /app/.npm/_logs/2019-03-29T05_40_44_981Z-debug.log
2019-03-29T05:40:45.108165+00:00 heroku[web.1]: Process exited with status 1
2019-03-29T05:41:17.062133+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/" host=intense-thicket-75401.herokuapp.com request_id=a636b254-6473-4064-aa68-4104b30fb816 fwd="109.202.101.43" dyno= connect= service= status=503 bytes= protocol=https
2019-03-29T05:41:17.634517+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/favicon.ico" host=intense-thicket-75401.herokuapp.com request_id=6a9aa019-822c-4b8e-a24b-01996fcf939c fwd="109.202.101.43" dyno= connect= service= status=503 bytes= protocol=https