Meteor up depoy error. Forever detected script exited with code: 1

I am using Meteor up to deploy my app in digital ocean server. The deployment process ran successfully but app is not starting up. the error log is not clear so that i couldn’t debug it.

mup logs
Meteor Up: Production Quality Meteor Deployments
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[45.55.174.247]     at Object.<anonymous> (/opt/librenote/app/programs/server/npm/npm-bcrypt/node_modules/bcrypt/bcrypt.js:3:35)




 at Module._compile (module.js:460:26)
    at Object.Module._extensions..js (module.js:478:10)
    at Module.load (module.js:355:32)
    at Function.Module._load (module.js:310:12)
    at Module.require (module.js:365:17)
    at require (module.js:384:17)
    at Object.Npm.require (/opt/librenote/app/programs/server/boot.js:142:18)
    at packages/npm-bcrypt/wrapper.js:1:1
error: Forever detected script exited with code: 1

The app is working fine in development machine.