npm start error

[deborahk]

npm start error

[DeborahK]

The above output shows your version:
2 info using [email protected]
3 info using [email protected]

As stated in the course, you need at least npm v3 ... but newer would be better. (I'm using npm 4.1.2) Please install the current versions of node and npm and try again.

[dastangoo]

Can you help about this error?

superuser:Hamed-MBP APM $ sudo npm start

[email protected] start /Users/superuser/APM
ng serve -o

Cannot read property 'config' of null
TypeError: Cannot read property 'config' of null
at Class.run (/Users/superuser/APM/node_modules/@angular/cli/tasks/serve.js:21:63)
at check_port_1.checkPort.then.port (/Users/superuser/APM/node_modules/@angular/cli/commands/serve.js:110:26)
at process._tickCallback (internal/process/next_tick.js:109:7)

npm ERR! Darwin 16.7.0
npm ERR! argv "/Users/superuser/.nvm/versions/node/v6.11.2/bin/node" "/Users/superuser/.nvm/versions/node/v6.11.2/bin/npm" "start"
npm ERR! node v6.11.2
npm ERR! npm v3.10.10
npm ERR! code ELIFECYCLE
npm ERR! [email protected] start: ng serve -o
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the [email protected] start script 'ng serve -o'.
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 apm package,
npm ERR! not with npm itself.
npm ERR! Tell the author that this fails on your system:
npm ERR! ng serve -o
npm ERR! You can get information on how to open an issue for this project with:
npm ERR! npm bugs apm
npm ERR! Or if that isn't available, you can get their info via:
npm ERR! npm owner ls apm
npm ERR! There is likely additional logging output above.

npm ERR! Please include the following file with any support request:
npm ERR! /Users/superuser/APM/npm-debug.log

[DeborahK]

There are several things that can cause this error as discussed here: angular/angular-cli#4736

The most common are an older version of the CLI or a problem with the CLI configuration file. Are you running this from the folder containing the angular cli config? Did you run npm install first without any errors?

[nbarcham]

Hi Deborah,
I am getting the below error when trying to preform npm start
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 'start' ]
2 info using [email protected]
3 info using [email protected]
4 verbose run-script [ 'prestart', 'start', 'poststart' ]
5 info prestart [email protected]
6 info start [email protected]
7 verbose unsafe-perm in lifecycle true
8 info [email protected] Failed to exec start script
9 verbose stack Error: [email protected] start: ng serve -o
9 verbose stack Exit status 1
9 verbose stack at EventEmitter. (C:\Program Files\nodejs\node_modules\npm\lib\utils\lifecycle.js:217:16)
9 verbose stack at emitTwo (events.js:87:13)
9 verbose stack at EventEmitter.emit (events.js:172:7)
9 verbose stack at ChildProcess. (C:\Program Files\nodejs\node_modules\npm\lib\utils\spawn.js:24:14)
9 verbose stack at emitTwo (events.js:87:13)
9 verbose stack at ChildProcess.emit (events.js:172:7)
9 verbose stack at maybeClose (internal/child_process.js:829:16)
9 verbose stack at Process.ChildProcess._handle.onexit (internal/child_process.js:211:5)
10 verbose pkgid [email protected]
11 verbose cwd C:\Users\naser.m.barcham\Documents\Projects\Angular-GettingStarted-master\APM
12 error Windows_NT 10.0.14393
13 error argv "C:\Program Files\nodejs\node.exe" "C:\Program Files\nodejs\node_modules\npm\bin\npm-cli.js" "start"
14 error node v4.6.0
15 error npm v2.15.9
16 error code ELIFECYCLE
17 error [email protected] start: ng serve -o
17 error Exit status 1
18 error Failed at the [email protected] start script 'ng serve -o'.
18 error This is most likely a problem with the apm package,
18 error not with npm itself.
18 error Tell the author that this fails on your system:
18 error ng serve -o
18 error You can get information on how to open an issue for this project with:
18 error npm bugs apm
18 error Or if that isn't available, you can get their info via:
18 error
18 error npm owner ls apm
18 error There is likely additional logging output above.
19 verbose exit [ 1, true ]
not sure why I do have the latest versions installed

[DeborahK]

From the Angular CLI docs:

Both the CLI and generated project have dependencies that require Node 6.9.0 or higher, together with NPM 3 or higher.

From your error message above:

2 info using [email protected]
3 info using [email protected]

Update your node and npm as shown in the course and try again.