npm run example fail!

[evilripper]

I can't run the example! Windows enviroment problem? :(

Bash:

npm run example

> braintree-dropin-react@0.1.1 example C:\Users\PORCO.DIO\Downloads\braintree-dropin-react-master
> ./node_modules/webpack/bin/webpack.js && ./node_modules/webpack-dev-server/bin/webpack-dev-server.js

'.' is not recognized as an internal or external command,
operable program or batch file.
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! braintree-dropin-react@0.1.1 example: `./node_modules/webpack/bin/webpack.js && ./node_modules/webpack-dev-server/bin/webpack-dev-server.js`
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the braintree-dropin-react@0.1.1 example script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

npm ERR! A complete log of this run can be found in:
npm ERR!     C:\Users\PORCO.DIO\AppData\Roaming\npm-cache\_logs\2019-02-11T09_36_50_147Z-debug.log

Debug log:

0 info it worked if it ends with ok
1 verbose cli [ 'C:\\Program Files\\nodejs\\node.exe',
1 verbose cli   'C:\\Program Files\\nodejs\\node_modules\\npm\\bin\\npm-cli.js',
1 verbose cli   'run',
1 verbose cli   'example' ]
2 info using npm@5.6.0
3 info using node@v8.11.3
4 verbose run-script [ 'preexample', 'example', 'postexample' ]
5 info lifecycle braintree-dropin-react@0.1.1~preexample: braintree-dropin-react@0.1.1
6 info lifecycle braintree-dropin-react@0.1.1~example: braintree-dropin-react@0.1.1
7 verbose lifecycle braintree-dropin-react@0.1.1~example: unsafe-perm in lifecycle true
8 verbose lifecycle braintree-dropin-react@0.1.1~example: PATH: [...]
9 verbose lifecycle braintree-dropin-react@0.1.1~example: CWD: C:\Users\PORCO.DIO\Downloads\braintree-dropin-react-master
10 silly lifecycle braintree-dropin-react@0.1.1~example: Args: [ '/d /s /c',
10 silly lifecycle   './node_modules/webpack/bin/webpack.js && ./node_modules/webpack-dev-server/bin/webpack-dev-server.js' ]
11 silly lifecycle braintree-dropin-react@0.1.1~example: Returned: code: 1  signal: null
12 info lifecycle braintree-dropin-react@0.1.1~example: Failed to exec example script
13 verbose stack Error: braintree-dropin-react@0.1.1 example: `./node_modules/webpack/bin/webpack.js && ./node_modules/webpack-dev-server/bin/webpack-dev-server.js`
13 verbose stack Exit status 1
13 verbose stack     at EventEmitter.<anonymous> (C:\Program Files\nodejs\node_modules\npm\node_modules\npm-lifecycle\index.js:285:16)
13 verbose stack     at emitTwo (events.js:126:13)
13 verbose stack     at EventEmitter.emit (events.js:214:7)
13 verbose stack     at ChildProcess.<anonymous> (C:\Program Files\nodejs\node_modules\npm\node_modules\npm-lifecycle\lib\spawn.js:55:14)
13 verbose stack     at emitTwo (events.js:126:13)
13 verbose stack     at ChildProcess.emit (events.js:214:7)
13 verbose stack     at maybeClose (internal/child_process.js:925:16)
13 verbose stack     at Process.ChildProcess._handle.onexit (internal/child_process.js:209:5)
14 verbose pkgid braintree-dropin-react@0.1.1
15 verbose cwd C:\Users\PORCO.DIO\Downloads\braintree-dropin-react-master\example
16 verbose Windows_NT 10.0.17134
17 verbose argv "C:\\Program Files\\nodejs\\node.exe" "C:\\Program Files\\nodejs\\node_modules\\npm\\bin\\npm-cli.js" "run" "example"
18 verbose node v8.11.3
19 verbose npm  v5.6.0
20 error code ELIFECYCLE
21 error errno 1
22 error braintree-dropin-react@0.1.1 example: `./node_modules/webpack/bin/webpack.js && ./node_modules/webpack-dev-server/bin/webpack-dev-server.js`
22 error Exit status 1
23 error Failed at the braintree-dropin-react@0.1.1 example script.
23 error This is probably not a problem with npm. There is likely additional logging output above.
24 verbose exit [ 1, true ]