Push notification throw error on when try to add ios platform

Installing “mx.ferreyra.callnumber” for ios
Installing “phonegap-plugin-push” for ios
Failed to install ‘phonegap-plugin-push’: Error: pod: Command failed with exit code 1
at ChildProcess.whenDone (/Users/promatics/Desktop/SaleBuyVideo/platforms/ios/cordova/node_modules/cordova-common/src/superspawn.js:169:23)
at emitTwo (events.js:106:13)
at ChildProcess.emit (events.js:191:7)
at maybeClose (internal/child_process.js:891:16)
at Socket. (internal/child_process.js:342:11)
at emitOne (events.js:96:13)
at Socket.emit (events.js:188:7)
at Pipe._handle.close [as _onclose] (net.js:497:12)
Error: pod: Command failed with exit code 1

That’s the interesting stuff here. Google for the plugin and podfiles etc.