Not able to publish audio video in ios

[sumansanohub]

Getting error during cordova plugin add cordova-plugin-opentok
Installing "cordova-plugin-opentok" for ios
Downloading OpenTok iOS SDK
downloaded
(node:5209) DeprecationWarning: exec: use child_process.execFile instead
expanded
moved OpenTok.framework into /Users/brahmaputra/Documents/Projects/Development/Patient/v1.8.0/sanoSense-Patient-iOS-v1.8.0/plugins/cordova-plugin-opentok/src/ios/
Removed extracted dir
Removed downloaded SDK
Adding cordova-plugin-opentok to package.json