Ionic Build Crash :: Failed to fetch custom plugin in Ionic Pro Build

Hello Folk,

my app-id : 8e9011be

I am stuck in Building application package In Ionic Pro.

I am using Two Custom Plugin in my application cordova-plugin-ews-barcodescanneris and cordova-plugin-ews-location.

I follow assign local plugin path from https://docs.npmjs.com/files/package.json#local-paths
I tried all types of a path but not able generate build.

Below are some Error Message when I trying to Build in Ionic Pro

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HISTORY

Discovered plugin “cordova-plugin-ews-barcodescanner” in config.xml. Adding it to the project
Fetching plugin “file:./cordova-plugin-ews-barcodescanner” via npm
Failed to restore plugin “cordova-plugin-ews-barcodescanner” from config.xml. You might need to try adding it again. Error: Failed to fetch plugin file:./cordova-plugin-ews-barcodescanner via registry.
Probably this is either a connection problem, or plugin spec is incorrect.
Check your connection and plugin name/version/URL.
Error: Registry returned 404 for GET on http://registry.npmjs.org/eyewitness-traxx
Discovered plugin “cordova-plugin-ews-location” in config.xml. Adding it to the project
Fetching plugin “file:./cordova-plugin-ews-location” via npm
Failed to restore plugin “cordova-plugin-ews-location” from config.xml. You might need to try adding it again. Error: Failed to fetch plugin file:./cordova-plugin-ews-location via registry.
Probably this is either a connection problem, or plugin spec is incorrect.
Check your connection and plugin name/version/URL…

where cordova-plugin-ews-barcodescanneris and cordova-plugin-ews-location are custom plugin in my application

I need one more suggestion
How can I assign path in config.xml and package.json

Below I assigned
In Package.json
"cordova-plugin-ews-barcodescanner": “file:~/cordova-plugin-ews-barcodescanner”,
“cordova-plugin-ews-location”: “file:~/cordova-plugin-ews-location”

In config.xml

plugin name=“cordova-plugin-ews-barcodescanner” spec=“file:~/cordova-plugin-ews-barcodescanner” />
** plugin name=“cordova-plugin-ews-location” spec=“file:~/cordova-plugin-ews-location”>**

Thanks,