Failed to run webapp online

[TyrusRC]

After successfully running on local machine, I have pushed my project to heroku to run online but it does not work correctly.

What should i do now?

[bourdakos1]

Did you check the logs?

[TyrusRC]

This log?

-----> Node.js app detected

-----> Creating runtime environment

   NPM_CONFIG_LOGLEVEL=error
   USE_YARN_CACHE=true
   NODE_ENV=production
   NODE_MODULES_CACHE=true
   NODE_VERBOSE=false

-----> Installing binaries
engines.node (package.json): unspecified
engines.npm (package.json): unspecified (use default)
engines.yarn (package.json): unspecified (use default)

   Resolving node version 12.x...
   Downloading and installing node 12.20.0...
   Using default npm version: 6.14.8
   Resolving yarn version 1.22.x...
   Downloading and installing yarn (1.22.10)
   Installed yarn 1.22.10

-----> Installing dependencies
Installing node modules (yarn.lock)
yarn install v1.22.10
[1/4] Resolving packages...
[2/4] Fetching packages...
warning mini-css-extract-plugin@0.5.0: Invalid bin field for "mini-css-extract-plugin".
warning url-loader@1.1.2: Invalid bin field for "url-loader".
info fsevents@2.0.6: The platform "linux" is incompatible with this module.
info "fsevents@2.0.6" is an optional dependency and failed compatibility check. Excluding it from installation.
info fsevents@1.2.9: The platform "linux" is incompatible with this module.
info "fsevents@1.2.9" is an optional dependency and failed compatibility check. Excluding it from installation.
[3/4] Linking dependencies...
warning "@cloud-annotations/models > @tensorflow/tfjs > @tensorflow/tfjs-data@1.4.0" has unmet peer dependency "seedrandom@~2.4.3".
warning "react-scripts > @typescript-eslint/eslint-plugin@1.6.0" has unmet peer dependency "typescript@".
warning "react-scripts > @typescript-eslint/parser@1.6.0" has unmet peer dependency "typescript@".
warning "react-scripts > @typescript-eslint/eslint-plugin > @typescript-eslint/typescript-estree@1.6.0" has unmet peer dependency "typescript@*".
warning "react-scripts > @typescript-eslint/eslint-plugin > tsutils@3.17.1" has unmet peer dependency "typescript@>=2.8.0 || >= 3.2.0-dev || >= 3.3.0-dev || >= 3.4.0-dev || >= 3.5.0-dev || >= 3.6.0-dev || >= 3.6.0-beta || >= 3.7.0-dev || >= 3.7.0-beta".
[4/4] Building fresh packages...
Done in 61.50s.

-----> Build
Running build (yarn)
yarn run v1.22.10
$ react-scripts build
Creating an optimized production build...
Browserslist: caniuse-lite is outdated. Please run next command yarn upgrade
Compiled with warnings.

   ./src/index.js
     Line 9:   'handlePrediction' is assigned a value but never used  no-unused-vars
     Line 15:  'render' is assigned a value but never used            no-unused-vars
   
   Search for the keywords to learn more about each warning.
   To ignore, add // eslint-disable-next-line to the line before.
   
   File sizes after gzip:
   
     252.5 KB  build/static/js/2.367fc7da.chunk.js
     1.92 KB   build/static/js/main.6b115d7b.chunk.js
     762 B     build/static/js/runtime~main.a8a9905a.js
     123 B     build/static/css/main.563c1e07.chunk.css
   
   The project was built assuming it is hosted at the server root.
   You can control this with the homepage field in your package.json.
   For example, add this to build it for GitHub Pages:
   
     "homepage" : "http://myname.github.io/myapp",
   
   The build folder is ready to be deployed.
   You may serve it with a static server:
   
     yarn global add serve
     serve -s build
   
   Find out more about deployment here:
   
     https://bit.ly/CRA-deploy
   
   Done in 48.31s.

-----> Pruning devDependencies
yarn install v1.22.10
[1/4] Resolving packages...
[2/4] Fetching packages...
info fsevents@2.0.6: The platform "linux" is incompatible with this module.
info "fsevents@2.0.6" is an optional dependency and failed compatibility check. Excluding it from installation.
info fsevents@1.2.9: The platform "linux" is incompatible with this module.
info "fsevents@1.2.9" is an optional dependency and failed compatibility check. Excluding it from installation.
[3/4] Linking dependencies...
warning "@cloud-annotations/models > @tensorflow/tfjs > @tensorflow/tfjs-data@1.4.0" has unmet peer dependency "seedrandom@~2.4.3".
warning "react-scripts > @typescript-eslint/eslint-plugin@1.6.0" has unmet peer dependency "typescript@".
warning "react-scripts > @typescript-eslint/parser@1.6.0" has unmet peer dependency "typescript@".
warning "react-scripts > @typescript-eslint/eslint-plugin > @typescript-eslint/typescript-estree@1.6.0" has unmet peer dependency "typescript@*".
warning "react-scripts > @typescript-eslint/eslint-plugin > tsutils@3.17.1" has unmet peer dependency "typescript@>=2.8.0 || >= 3.2.0-dev || >= 3.3.0-dev || >= 3.4.0-dev || >= 3.5.0-dev || >= 3.6.0-dev || >= 3.6.0-beta || >= 3.7.0-dev || >= 3.7.0-beta".
[4/4] Building fresh packages...
warning Ignored scripts due to flag.
Done in 12.85s.

-----> Caching build
- yarn cache

-----> Build succeeded!
! Unmet dependencies don't fail yarn install but may cause runtime issues
npm/npm#7494
-----> Discovering process types
Procfile declares types -> (none)
Default types for buildpack -> web
-----> Compressing...
Done: 66.2M
-----> Launching...
Released v3
https://signlookbucket.herokuapp.com/ deployed to Heroku

[bourdakos1]

Are these the logs from “heroku logs —tail”?

[TyrusRC]

Sure, I just upload folder without running npm install, is it ok ?