Error reading /UserPath/kolibri/kolibri/core/kolibri_core_stats.json. about kolibri HOT 5 CLOSED

$ npm run watch

> [email protected] watch /home/jamalex/fle/kolibri
> webpack --config webpack.config.dev.js --watch


/home/jamalex/fle/kolibri/assets/src/read_bundle_plugin.js:31
    var result = execSync("python kolibri/utils/webpack_config_export.py " + p
                 ^
TypeError: undefined is not a function
    at readBundlePlugin (/home/jamalex/fle/kolibri/assets/src/read_bundle_plugin.js:31:18)
    at recurseBundlePlugins (/home/jamalex/fle/kolibri/assets/src/recurse_bundle_plugins.js:52:22)
    at Object.<anonymous> (/home/jamalex/fle/kolibri/webpack.config.js:38:15)
    at Module._compile (module.js:456:26)
    at Object.Module._extensions..js (module.js:474:10)
    at Module.load (module.js:356:32)
    at Function.Module._load (module.js:312:12)
    at Module.require (module.js:364:17)
    at require (module.js:380:17)
    at Object.<anonymous> (/home/jamalex/fle/kolibri/webpack.config.dev.js:9:15)
npm ERR! weird error 8
npm WARN This failure might be due to the use of legacy binary "node"
npm WARN For further explanations, please read
/usr/share/doc/nodejs/README.Debian

npm ERR! not ok code 0

$ npm run build

> [email protected] build /home/jamalex/fle/kolibri
> webpack

Traceback (most recent call last):
  File "kolibri/utils/webpack_config_export.py", line 6, in <module>
    import cli
  File "/home/jamalex/fle/kolibri/kolibri/utils/cli.py", line 9, in <module>
    import kolibri
ImportError: No module named kolibri
child_process.js:513
    throw err;
    ^

Error: Command failed: python kolibri/utils/webpack_config_export.py kolibri.core.kolibri_plugin
Traceback (most recent call last):
  File "kolibri/utils/webpack_config_export.py", line 6, in <module>
    import cli
  File "/home/jamalex/fle/kolibri/kolibri/utils/cli.py", line 9, in <module>
    import kolibri
ImportError: No module named kolibri

    at checkExecSyncError (child_process.js:470:13)
    at execSync (child_process.js:510:13)
    at readBundlePlugin (/home/jamalex/fle/kolibri/assets/src/read_bundle_plugin.js:31:18)
    at recurseBundlePlugins (/home/jamalex/fle/kolibri/assets/src/recurse_bundle_plugins.js:52:22)
    at Object.<anonymous> (/home/jamalex/fle/kolibri/webpack.config.js:38:15)
    at Module._compile (module.js:541:32)
    at Object.Module._extensions..js (module.js:550:10)
    at Module.load (module.js:456:32)
    at tryModuleLoad (module.js:415:12)
    at Function.Module._load (module.js:407:3)

npm ERR! Linux 4.0.0-xps13
npm ERR! argv "/usr/bin/nodejs" "/usr/bin/npm" "run" "build"
npm ERR! node v6.0.0
npm ERR! npm  v3.8.6
npm ERR! code ELIFECYCLE
npm ERR! [email protected] build: `webpack`
npm ERR! Exit status 1
npm ERR! 
npm ERR! Failed at the [email protected] build script 'webpack'.
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 kolibri package,
npm ERR! not with npm itself.
npm ERR! Tell the author that this fails on your system:
npm ERR!     webpack
npm ERR! You can get information on how to open an issue for this project with:
npm ERR!     npm bugs kolibri
npm ERR! Or if that isn't available, you can get their info via:
npm ERR!     npm owner ls kolibri
npm ERR! There is likely additional logging output above.

npm ERR! Please include the following file with any support request:
npm ERR!     /home/jamalex/fle/kolibri/npm-debug.log