Some troubles with deploying vue.js to heroku - heroku

Question

I tried to deploy spring-boot web-application and vue-cli as frontend.
Spring hasn't problems.
There is problem with node build/build.js.
link on github - https://github.com/stepan09/courseworkSV
There is my build log.
[INFO] Running 'npm install' in /tmp/build_31b7d0935e35bcd3ec6a6bff51ee1bad/sport-app
[WARNING] npm WARN bootstrap#4.1.1 requires a peer of jquery#1.9.1 - 3 but none is installed. You must install peer dependencies yourself.
[ERROR]
[INFO] up to date in 2.729s
[INFO]
[INFO] --- frontend-maven-plugin:1.6:npm (npm run build) # sport-app ---
[INFO] Running 'npm run build' in /tmp/build_31b7d0935e35bcd3ec6a6bff51ee1bad/sport-app
[INFO]
[INFO] > sport-app#1.0.0 build /tmp/build_31b7d0935e35bcd3ec6a6bff51ee1bad/sport-app
[INFO] > node build/build.js
[INFO]
[ERROR] internal/modules/cjs/loader.js:550
[ERROR] throw err;
[ERROR] ^
[ERROR]
[ERROR] Error: Cannot find module 'chalk'
[ERROR] at Function.Module._resolveFilename (internal/modules/cjs/loader.js:548:15)
[ERROR] at Function.Module._load (internal/modules/cjs/loader.js:475:25)
[ERROR] at Module.require (internal/modules/cjs/loader.js:598:17)
[ERROR] at require (internal/modules/cjs/helpers.js:11:18)
[ERROR] at Object.<anonymous> (/tmp/build_31b7d0935e35bcd3ec6a6bff51ee1bad/sport-app/build/check-versions.js:2:15)
[ERROR] at Module._compile (internal/modules/cjs/loader.js:654:30)
[ERROR] at Object.Module._extensions..js (internal/modules/cjs/loader.js:665:10)
[ERROR] at Module.load (internal/modules/cjs/loader.js:566:32)
[ERROR] at tryModuleLoad (internal/modules/cjs/loader.js:506:12)
[ERROR] at Function.Module._load (internal/modules/cjs/loader.js:498:3)
[ERROR] npm ERR! code ELIFECYCLE
[ERROR] npm ERR! errno 1
[ERROR] npm ERR! sport-app#1.0.0 build: `node build/build.js`
[ERROR] npm ERR! Exit status 1
[ERROR] npm ERR!
[ERROR] npm ERR! Failed at the sport-app#1.0.0 build script.
[ERROR] npm ERR! This is probably not a problem with npm. There is likely additional logging output above.
[ERROR]
[ERROR] npm ERR! A complete log of this run can be found in:
[ERROR] npm ERR! /app/.npm/_logs/2018-05-30T18_07_35_898Z-debug.log
[INFO] ------------------------------------------------------------------------
[INFO] Reactor Summary:
[INFO]
[INFO] coursework ......................................... SUCCESS [ 2.843 s]
[INFO] sport-app .......................................... FAILURE [ 15.478 s]
[INFO] sport .............................................. SKIPPED
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 20.496 s
[INFO] Finished at: 2018-05-30T18:07:35+00:00
[INFO] Final Memory: 34M/269M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal com.github.eirslett:frontend-maven-plugin:1.6:npm (npm run build) on project sport-app: Failed to run task: 'npm run build' failed. org.apache.commons.exec.ExecuteException: Process exited with an error: 1 (Exit value: 1) -> [Help 1]
[ERROR]
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR]
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoFailureException
[ERROR]
[ERROR] After correcting the problems, you can resume the build with the command
[ERROR] mvn <goals> -rf :sport-app
! ERROR: Failed to build app with Maven
We're sorry this build is failing! If you can't find the issue in application code,
please submit a ticket so we can help: https://help.heroku.com/
! Push rejected, failed to compile Java app.
! Push failed

Answer 1

Deleting 'yarn.lock' worked for me