ionic-cli: Error: Failed to fetch plugin from a URL

Description: ionic cordova plugin add {URL} fails. I tried to add the WKWebView as an example on a brand new ionic app, and it failed. ionic cordova plugin add https://github.com/ionic-team/cordova-plugin-wkwebview-engine.git --save

However, if I run the command without the “ionic” (i.e. using Cordova) it works fine. However, when packaging in the Ionic Cloud, it doesn’t seem to work.

cordova plugin add https://github.com/ionic-team/cordova-plugin-wkwebview-engine.git --save

Steps to Reproduce: Create a new Ionic Blank App Run: ionic cordova plugin add https://github.com/ionic-team/cordova-plugin-wkwebview-engine.git --save

Output: C:\mobile\TestApp>ionic cordova plugin add https://github.com/ionic-team/cordova-plugin-wkwebview-engine.git --save

cordova plugin add https://github.com/ionic-team/cordova-plugin-wkwebview-engine.git --save × Running command - failed! [ERROR] An error occurred while running cordova plugin add

    https://github.com/ionic-team/cordova-plugin-wkwebview-engine... (exit code 1):

    Error: Failed to fetch plugin https://github.com/ionic-team/cordova-plugin-wkwebview-engine.git via registry.
    Probably this is either a connection problem, or plugin spec is incorrect.
    Check your connection and plugin name/version/URL.
    Error: cmd: Command failed with exit code 1 Error output:
    npm WARN addRemoteGit Error: Command failed: git -c core.longpaths=true config --get remote.origin.url
    npm WARN addRemoteGit
    npm WARN addRemoteGit     at ChildProcess.exithandler (child_process.js:204:12)
    npm WARN addRemoteGit     at emitTwo (events.js:106:13)
    npm WARN addRemoteGit     at ChildProcess.emit (events.js:191:7)
    npm WARN addRemoteGit     at maybeClose (internal/child_process.js:886:16)
    npm WARN addRemoteGit     at Socket.<anonymous> (internal/child_process.js:342:11)
    npm WARN addRemoteGit     at emitOne (events.js:96:13)
    npm WARN addRemoteGit     at Socket.emit (events.js:188:7)
    npm WARN addRemoteGit     at Pipe._handle.close [as _onclose] (net.js:497:12)
    npm WARN addRemoteGit  git+https://github.com/ionic-team/cordova-plugin-wkwebview-engine.git resetting remote
    C:\Users\user\AppData\Roaming\npm-cache\_git-remotes\git-https-github-com-ionic-team-cordova-plugin-wkwebview-engine-git-ae2e0322
    because of error: { Error: Command failed: git -c core.longpaths=true config --get remote.origin.url
    npm WARN addRemoteGit
    npm WARN addRemoteGit     at ChildProcess.exithandler (child_process.js:204:12)
    npm WARN addRemoteGit     at emitTwo (events.js:106:13)
    npm WARN addRemoteGit     at ChildProcess.emit (events.js:191:7)
    npm WARN addRemoteGit     at maybeClose (internal/child_process.js:886:16)
    npm WARN addRemoteGit     at Socket.<anonymous> (internal/child_process.js:342:11)
    npm WARN addRemoteGit     at emitOne (events.js:96:13)
    npm WARN addRemoteGit     at Socket.emit (events.js:188:7)
    npm WARN addRemoteGit     at Pipe._handle.close [as _onclose] (net.js:497:12)
    npm WARN addRemoteGit   killed: false,
    npm WARN addRemoteGit   code: 1,
    npm WARN addRemoteGit   signal: null,
    npm WARN addRemoteGit   cmd: 'git -c core.longpaths=true config --get remote.origin.url' }
    npm ERR! git clone --template=C:\Users\user\AppData\Roaming\npm-cache\_git-remotes\_templates --mirror
    https://github.com/ionic-team/cordova-plugin-wkwebview-engine.git
    C:\Users\user\AppData\Roaming\npm-cache\_git-remotes\git-https-github-com-ionic-team-cordova-plugin-wkwebview-engine-git-ae2e0322:
    Cloning into bare repository
    'C:\Users\user\AppData\Roaming\npm-cache\_git-remotes\git-https-github-com-ionic-team-cordova-plugin-wkwebview-engine-git-ae2e0322'...
    npm ERR! git clone --template=C:\Users\user\AppData\Roaming\npm-cache\_git-remotes\_templates --mirror
    https://github.com/ionic-team/cordova-plugin-wkwebview-engine.git
    C:\Users\user\AppData\Roaming\npm-cache\_git-remotes\git-https-github-com-ionic-team-cordova-plugin-wkwebview-engine-git-ae2e0322:
    fatal: Unable to find remote helper for 'https'
    npm ERR! Windows_NT 10.0.14393
    npm ERR! argv "C:\\Program Files\\nodejs\\node.exe" "C:\\Program
    Files\\nodejs\\node_modules\\npm\\bin\\npm-cli.js" "install"
    "https://github.com/ionic-team/cordova-plugin-wkwebview-engine.git" "--save"
    npm ERR! node v6.10.3
    npm ERR! npm  v3.10.10
    npm ERR! code 128

    npm ERR! Command failed: git -c core.longpaths=true clone
    --template=C:\Users\user\AppData\Roaming\npm-cache\_git-remotes\_templates --mirror
    https://github.com/ionic-team/cordova-plugin-wkwebview-engine.git
    C:\Users\user\AppData\Roaming\npm-cache\_git-remotes\git-https-github-com-ionic-team-cordova-plugin-wkwebview-engine-git-ae2e0322
    npm ERR! Cloning into bare repository
    'C:\Users\user\AppData\Roaming\npm-cache\_git-remotes\git-https-github-com-ionic-team-cordova-plugin-wkwebview-engine-git-ae2e0322'...
    npm ERR! fatal: Unable to find remote helper for 'https'
    npm ERR!
    npm ERR!
    npm ERR! If you need help, you may report this error at:
    npm ERR!     <https://github.com/npm/npm/issues>

    npm ERR! Please include the following file with any support request:
    npm ERR!     C:\mobile\TestApp\node_modules\npm-debug.log

My ionic info:

cli packages: (C:\mobile\TestApp\node_modules)

@ionic/cli-utils  : 1.9.2
ionic (Ionic CLI) : 3.9.2

global packages:

Cordova CLI : 7.0.1

local packages:

@ionic/app-scripts : 2.1.4
Cordova Platforms  : android 6.2.3 browser 4.1.0 ios 4.4.0
Ionic Framework    : ionic-angular 3.6.0

System:

Node : v6.10.3
npm  : 3.10.10
OS   : Windows 10

Other Information: