> @ build /mnt/workspace_2TBSG/programming_workspace/node_apps/oil-gas-deckgl
> react-scripts build

Creating an optimized production build...
/mnt/workspace_2TBSG/programming_workspace/node_apps/oil-gas-deckgl/node_modules/extract-text-webpack-plugin/dist/index.js:249
            if (extractedChunk.getNumberOfModules()) {
                               ^

TypeError: extractedChunk.getNumberOfModules is not a function
    at ExtractTextPlugin.<anonymous> (/mnt/workspace_2TBSG/programming_workspace/node_apps/oil-gas-deckgl/node_modules/extract-text-webpack-plugin/dist/index.js:249:32)
    at Array.forEach (native)
    at Compilation.<anonymous> (/mnt/workspace_2TBSG/programming_workspace/node_apps/oil-gas-deckgl/node_modules/extract-text-webpack-plugin/dist/index.js:248:27)
    at Compilation.applyPluginsAsyncSeries (/mnt/workspace_2TBSG/programming_workspace/node_apps/oil-gas-deckgl/node_modules/tapable/lib/Tapable.js:206:13)
    at sealPart2 (/mnt/workspace_2TBSG/programming_workspace/node_apps/oil-gas-deckgl/node_modules/react-scripts/node_modules/webpack/lib/Compilation.js:662:9)
    at next (/mnt/workspace_2TBSG/programming_workspace/node_apps/oil-gas-deckgl/node_modules/tapable/lib/Tapable.js:202:11)
    at /mnt/workspace_2TBSG/programming_workspace/node_apps/oil-gas-deckgl/node_modules/extract-text-webpack-plugin/dist/index.js:244:13
    at /mnt/workspace_2TBSG/programming_workspace/node_apps/oil-gas-deckgl/node_modules/async/dist/async.js:473:16
    at iteratorCallback (/mnt/workspace_2TBSG/programming_workspace/node_apps/oil-gas-deckgl/node_modules/async/dist/async.js:1050:13)
    at /mnt/workspace_2TBSG/programming_workspace/node_apps/oil-gas-deckgl/node_modules/async/dist/async.js:958:16
    at /mnt/workspace_2TBSG/programming_workspace/node_apps/oil-gas-deckgl/node_modules/extract-text-webpack-plugin/dist/index.js:227:15
    at /mnt/workspace_2TBSG/programming_workspace/node_apps/oil-gas-deckgl/node_modules/async/dist/async.js:473:16
    at iteratorCallback (/mnt/workspace_2TBSG/programming_workspace/node_apps/oil-gas-deckgl/node_modules/async/dist/async.js:1050:13)
    at /mnt/workspace_2TBSG/programming_workspace/node_apps/oil-gas-deckgl/node_modules/async/dist/async.js:958:16
    at /mnt/workspace_2TBSG/programming_workspace/node_apps/oil-gas-deckgl/node_modules/extract-text-webpack-plugin/dist/index.js:224:22
    at /mnt/workspace_2TBSG/programming_workspace/node_apps/oil-gas-deckgl/node_modules/async/dist/async.js:3096:16

npm ERR! Linux 4.4.0-53-generic
npm ERR! argv "/home/geodevadmin/.nvm/versions/node/v7.6.0/bin/node" "/home/geodevadmin/.nvm/versions/node/v7.6.0/bin/npm" "run" "build"
npm ERR! node v7.6.0
npm ERR! npm  v4.1.2
npm ERR! code ELIFECYCLE
npm ERR! @ build: `react-scripts build`
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the @ 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  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
npm ERR! Or if that isn't available, you can get their info via:
npm ERR!     npm owner ls
npm ERR! There is likely additional logging output above.

npm ERR! Please include the following file with any support request:
npm ERR!     /mnt/workspace_2TBSG/programming_workspace/node_apps/oil-gas-deckgl/npm-debug.log