I downloaded the example located here:
https://github.com/zeit/next.js/tree/master/examples/using-with-router
And after installing dependencies and running npm run dev I received an error:

I'm running on MacOS 10.12.6 (Sierra)
The error occurs after dependencies are installed and starting next via npm run dev:
> [email protected] dev /Users/jake-wies/Desktop/home/Code/sandbox/using-with-router
> next
internal/child_process.js:325
throw errnoException(err, 'spawn');
^
Error: spawn EACCES
at _errnoException (util.js:1022:11)
at ChildProcess.spawn (internal/child_process.js:325:11)
at Object.exports.spawn (child_process.js:493:9)
at spawn (/Users/jake-wies/Desktop/home/Code/sandbox/using-with-router/node_modules/cross-spawn/index.js:17:18)
at startProcess (/Users/jake-wies/Desktop/home/Code/sandbox/using-with-router/node_modules/next/dist/bin/next:69:36)
at Object.<anonymous> (/Users/jake-wies/Desktop/home/Code/sandbox/using-with-router/node_modules/next/dist/bin/next:90:12)
at Module._compile (module.js:573:30)
at Object.Module._extensions..js (module.js:584:10)
at Module.load (module.js:507:32)
at tryModuleLoad (module.js:470:12)
I was directed to this example inside the Zeit community slack as feedback for a question I asked regarding styling active Links uniquely.
Edit:
Here is the complete log after the error was thrown:
0 info it worked if it ends with ok
1 verbose cli [ '/usr/local/Cellar/node/8.3.0/bin/node',
1 verbose cli '/Users/jake-wies/.npm-packages/bin/npm',
1 verbose cli 'run',
1 verbose cli 'dev' ]
2 info using [email protected]
3 info using [email protected]
4 verbose run-script [ 'predev', 'dev', 'postdev' ]
5 info lifecycle [email protected]~predev: [email protected]
6 info lifecycle [email protected]~dev: [email protected]
7 verbose lifecycle [email protected]~dev: unsafe-perm in lifecycle true
8 verbose lifecycle [email protected]~dev: PATH: /Users/jake-wies/.npm-packages/lib/node_modules/npm/bin/node-gyp-bin:/Users/jake-wies/Desktop/home/Code/sandbox/using-with-router/node_modules/.bin:/Users/jake-wies/.npm-packages/bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:/Users/jake-wies/.npm-packages/bin
9 verbose lifecycle [email protected]~dev: CWD: /Users/jake-wies/Desktop/home/Code/sandbox/using-with-router
10 silly lifecycle [email protected]~dev: Args: [ '-c', 'next' ]
11 silly lifecycle [email protected]~dev: Returned: code: 1 signal: null
12 info lifecycle [email protected]~dev: Failed to exec dev script
13 verbose stack Error: [email protected] dev: `next`
13 verbose stack Exit status 1
13 verbose stack at EventEmitter.<anonymous> (/Users/jake-wies/.npm-packages/lib/node_modules/npm/node_modules/npm-lifecycle/index.js:280:16)
13 verbose stack at emitTwo (events.js:125:13)
13 verbose stack at EventEmitter.emit (events.js:213:7)
13 verbose stack at ChildProcess.<anonymous> (/Users/jake-wies/.npm-packages/lib/node_modules/npm/node_modules/npm-lifecycle/lib/spawn.js:55:14)
13 verbose stack at emitTwo (events.js:125:13)
13 verbose stack at ChildProcess.emit (events.js:213:7)
13 verbose stack at maybeClose (internal/child_process.js:927:16)
13 verbose stack at Process.ChildProcess._handle.onexit (internal/child_process.js:211:5)
14 verbose pkgid [email protected]
15 verbose cwd /Users/jake-wies/Desktop/home/Code/sandbox/using-with-router
16 verbose Darwin 16.7.0
17 verbose argv "/usr/local/Cellar/node/8.3.0/bin/node" "/Users/jake-wies/.npm-packages/bin/npm" "run" "dev"
18 verbose node v8.3.0
19 verbose npm v5.4.0
20 error code ELIFECYCLE
21 error errno 1
22 error [email protected] dev: `next`
22 error Exit status 1
23 error Failed at the [email protected] dev script.
23 error This is probably not a problem with npm. There is likely additional logging output above.
24 verbose exit [ 1, true ]
npm 5.4.0 for some reason does not allow to run to react properly.
Install npm 5.3.0 with -> sudo npm install -g [email protected]
I also had to reinstall node_modules to get it to work. Any thought as to why this is happening with npm 5.3.0, seems like a strange issue.
Most helpful comment
npm 5.4.0 for some reason does not allow to run to react properly.
Install npm 5.3.0 with -> sudo npm install -g [email protected]