I was trying to push my code to heroku and this error happen .
ExternalModuleFactoryPlugin.js:37 handleExternals
[build_56fd8eac2fb60590722f9b5429d2a529]/[webpack]/lib/ExternalModuleFactory Plugin.js:37:33
ExternalModuleFactoryPlugin.js:46 next
[build_56fd8eac2fb60590722f9b5429d2a529]/[webpack]/lib/ExternalModuleFactory Plugin.js:46:8
ExternalModuleFactoryPlugin.js:59 handleExternals
[build_56fd8eac2fb60590722f9b5429d2a529]/[webpack]/lib/ExternalModuleFactory Plugin.js:59:7
ExternalModuleFactoryPlugin.js:79 ExternalModuleFactoryPlugin.
[build_56fd8eac2fb60590722f9b5429d2a529]/[webpack]/lib/ExternalModuleFactory Plugin.js:79:5
NormalModuleFactory.js:246 applyPluginsAsyncWaterfall
[build_56fd8eac2fb60590722f9b5429d2a529]/[react-scripts]/[webpack]/lib/Norma lModuleFactory.js:246:4
Tapable.js:204
[build_56fd8eac2fb60590722f9b5429d2a529]/[react-scripts]/[tapable]/lib/Tapab le.js:204:11
IgnorePlugin.js:56 IgnorePlugin.checkIgnore
[build_56fd8eac2fb60590722f9b5429d2a529]/[react-scripts]/[webpack]/lib/Ignor ePlugin.js:56:10
Tapable.js:208 NormalModuleFactory.applyPluginsAsyncWaterfall
[build_56fd8eac2fb60590722f9b5429d2a529]/[react-scripts]/[tapable]/lib/Tapab le.js:208:13
NormalModuleFactory.js:230 NormalModuleFactory.create
[build_56fd8eac2fb60590722f9b5429d2a529]/[react-scripts]/[webpack]/lib/Norma lModuleFactory.js:230:8
Compilation.js:382 Compilation._addModuleChain
[build_56fd8eac2fb60590722f9b5429d2a529]/[react-scripts]/[webpack]/lib/Compi lation.js:382:17
Compilation.js:464 Compilation.addEntry
[build_56fd8eac2fb60590722f9b5429d2a529]/[react-scripts]/[webpack]/lib/Compi lation.js:464:8
SingleEntryPlugin.js:22 SingleEntryPlugin.
[build_56fd8eac2fb60590722f9b5429d2a529]/[webpack]/lib/SingleEntryPlugin.js: 22:15
Tapable.js:229 Compiler.applyPluginsParallel
[build_56fd8eac2fb60590722f9b5429d2a529]/[react-scripts]/[tapable]/lib/Tapab le.js:229:14
Compiler.js:488
[build_56fd8eac2fb60590722f9b5429d2a529]/[react-scripts]/[webpack]/lib/Compi ler.js:488:8
Tapable.js:131 Compiler.applyPluginsAsyncSeries
[build_56fd8eac2fb60590722f9b5429d2a529]/[react-scripts]/[tapable]/lib/Tapab le.js:131:46
Compiler.js:481 Compiler.compile
[build_56fd8eac2fb60590722f9b5429d2a529]/[react-scripts]/[webpack]/lib/Compi ler.js:481:7
npm ERR! Linux 3.13.0-112-generic
npm ERR! argv "/tmp/build_56fd8eac2fb60590722f9b5429d2a529/.heroku/node/bin/node" "/tmp/build_56fd8eac2fb60590722f9b5429d2a529/.heroku/node/bin/npm" "run" "build"
npm ERR! node v6.11.0
npm ERR! npm v3.10.10
npm ERR! code ELIFECYCLE
npm ERR! [email protected] build: react-scripts build
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the [email protected] build script 'react-scripts build'.
npm ERR! Make sure you have the latest version of node.js and npm installed.
npm ERR! If you do, this is most likely a problem with the btfWeb2 package,
npm ERR! not with npm itself.
npm ERR! Tell the author that this fails on your system:
npm ERR! react-scripts build
npm ERR! You can get information on how to open an issue for this project with:
npm ERR! npm bugs btfWeb2
npm ERR! Or if that isn't available, you can get their info via:
npm ERR! npm owner ls btfWeb2
npm ERR! There is likely additional logging output above.
npm ERR! Please include the following file with any support request:
npm ERR! /tmp/build_56fd8eac2fb60590722f9b5429d2a529/npm-debug.log
! Push rejected, failed to compile React.js (create-react-app) multi app.
! Push failed
Can you please help ?