I can not add plugin ImagePicker

I want to add imagePicker plugin.
ionic cordova plugin add https://github.com/Telerik-Verified-Plugins/ImagePicker --save
But i got an error.

✖ Running command - failed!

[ERROR] Cordova encountered an error.
        You may get more insight by running the Cordova command above directly.
        
[ERROR] An error occurred while running cordova plugin add https://github.com/Telerik-Verified-Plugins/ImagePicker --sav... (exit code 1):
        
        Error: Failed to fetch plugin https://github.com/Telerik-Verified-Plugins/ImagePicker via registry.
        Probably this is either a connection problem, or plugin spec is incorrect.
        Check your connection and plugin name/version/URL.
        Error: npm: Command failed with exit code 235 Error output:
        npm ERR! addLocal Could not install /var/folders/d5/lftkh5rs3zn93sq_3vfk8c2w0000gp/T/npm-4427-a10ff8ca/git-cache-201971fb/1d453300ae3dacb007a404fd59536afcb67ab286
        npm ERR! code EISDIR
        npm ERR! errno -21
        npm ERR! syscall read
        npm ERR! eisdir EISDIR: illegal operation on a directory, read
        npm ERR! eisdir This is most likely not a problem with npm itself
        npm ERR! eisdir and is related to npm not being able to find a package.json in
        npm ERR! eisdir a package you are trying to install.
        
        npm ERR! A complete log of this run can be found in:
        npm ERR!     /Users/ThunderBirdsX3/.npm/_logs/2017-05-15T10_33_46_956Z-debug.log

It can use ionic cordova plugin add cordova-plugin-image-picker.
But when I use function hasReadPermission(). I got an error.

[17:15:47]  console.warn: Native: tried calling ImagePicker.hasReadPermission, but the ImagePicker plugin is not 
            installed. 
[17:15:47]  console.warn: Install the ImagePicker plugin: 'ionic plugin add 
            https://github.com/Telerik-Verified-Plugins/ImagePicker' 
[17:15:47]  console.error: error : plugin_not_installed

You also need to add the npm package

npm install --save @ionic-native/image-picker

Since you upgraded to Cordova 7, all packages have to get a package.json.
You can fork his repo and add a package.json
That’s what I did: https://github.com/Keko94/ImagePicker

Assuming that you’re using Ionic v1.x and ngCordova, you need to use the following command

ionic plugin add https://github.com/Telerik-Verified-Plugins/ImagePicker

or

cordova plugin add https://github.com/Telerik-Verified-Plugins/ImagePicker

Notice that I’m using ionic plugin add instead of ionic cordova plugin add.

Ionic v1.x CLI it’s a wrapper for Cordova CLI, so you don’t need to mix two commands as one.

FWIW, I found that ImagePicker plugin buggy as hell. If you can handle only choosing one image at a time, I have had much better results with the Camera plugin.

That command from ionic 3.2.0

I’m not sure of that…

But I’m sure about that. Because in APIs documents, They didn’t update command to lasted version.

Hey keko! I still getting the error, I’ve forked the repo https://github.com/victordeassis/ImagePicker and added the package.json, but when I run the command ionic cordova plugin add https://github.com/victordeassis/ImagePicker.git the error continues… can you help me please?

If you have teamviewer I can try to help you.
Show me your package.json please