Errors during build

[bibhu100]

I am getting the below errors while building, any idea what might be the issue?

"OBJC_CLASS$_RTCAudioTrack", referenced from:

  _get_field_types_PhoneRTCPlugin in PhoneRTCPlugin.o

"OBJC_CLASS$_RTCEAGLVideoView", referenced from:

  __TFC12HelloCordova14PhoneRTCPlugin15createVideoViewfS0_FT6paramsGSqCS_17VideoLayoutParams__CSo16RTCEAGLVideoView in PhoneRTCPlugin.o


  __TFC12HelloCordova14PhoneRTCPlugin19addRemoteVideoTrackfS0_FCSo13RTCVideoTrackT_ in PhoneRTCPlugin.o


  __TToFC12HelloCordova14PhoneRTCPlugin19addRemoteVideoTrackfS0_FCSo13RTCVideoTrackT_ in PhoneRTCPlugin.o


  _get_field_types_PhoneRTCPlugin in PhoneRTCPlugin.o


  _get_field_types_VideoTrackViewPair in PhoneRTCPlugin.o


  __TFFC12HelloCordova14PhoneRTCPlugin12setVideoViewFS0_FCSo20CDVInvokedUrlCommandT_U_FT_T_ in PhoneRTCPlugin.o

"OBJC_CLASS$_RTCICECandidate", referenced from:

  __TFC12HelloCordova7Session14receiveMessagefS0_FSST_ in Session.o


  _get_field_types_Session in Session.o


  __TTSCSo15RTCICECandidate___TFSa6appendU__fRGSaQ__FQ_T_ in Session.o


  __TTSCSo15RTCICECandidate___TFVSs12_ArrayBuffer18_uninitializedCopyU__fGS_Q__FTGVSs5RangeSi_6targetGVSs20UnsafeMutablePointerQ___GS1_Q__ in Session.o


  __TTSCSo15RTCICECandidate___TFVSs12_ArrayBufferg9subscriptFSiQ_ in SessionDescriptionDelegate.o


  __TFC12HelloCordova7Session14receiveMessagefS0_FSST_ in Session.o


  _get_field_types_Session in Session.o


  __TTSCSo15RTCICECandidate___TFSa6appendU__fRGSaQ__FQ_T_ in Session.o


  __TTSCSo15RTCICECandidate___TFVSs12_ArrayBuffer18_uninitializedCopyU__fGS_Q__FTGVSs5RangeSi_6targetGVSs20UnsafeMutablePointerQ___GS1_Q__ in Session.o


  __TTSCSo15RTCICECandidate___TFVSs12_ArrayBufferg9subscriptFSiQ_ in SessionDescriptionDelegate.o

"OBJC_CLASS$_RTCICEServer", referenced from:

  __TFC12HelloCordova7Session4callfS0_FT_T_ in Session.o


  __TTSCSo12RTCICEServer___TFSa6appendU__fRGSaQ__FQ_T_ in Session.o


  __TTSCSo12RTCICEServer_PSs9AnyObject____TFSs15_arrayForceCastU___FGSaQ__GSaQ0__ in Session.o


  __TTSCSo12RTCICEServer___TFVSs12_ArrayBuffer18_uninitializedCopyU__fGS_Q__FTGVSs5RangeSi_6targetGVSs20UnsafeMutablePointerQ___GS1_Q__ in Session.o

"OBJC_CLASS$_RTCMediaConstraints", referenced from:

  __TFC12HelloCordova14PhoneRTCPlugin19initLocalVideoTrackfS0_FT_T_ in PhoneRTCPlugin.o


  __TFC12HelloCordova7SessioncfMS0_FT6pluginCS_14PhoneRTCPlugin21peerConnectionFactoryCSo24RTCPeerConnectionFactory6configCS_13SessionConfig10callbackIdSS10sessionKeySS_S0_ in Session.o


  __TFC12HelloCordova7SessionCfMS0_FT6pluginCS_14PhoneRTCPlugin21peerConnectionFactoryCSo24RTCPeerConnectionFactory6configCS_13SessionConfig10callbackIdSS10sessionKeySS_S0_ in Session.o


  _get_field_types_Session in Session.o


  __TFC12HelloCordova14PhoneRTCPlugin19initLocalVideoTrackfS0_FT_T_ in PhoneRTCPlugin.o


  __TFC12HelloCordova7SessioncfMS0_FT6pluginCS_14PhoneRTCPlugin21peerConnectionFactoryCSo24RTCPeerConnectionFactory6configCS_13SessionConfig10callbackIdSS10sessionKeySS_S0_ in Session.o


  __TFC12HelloCordova7SessionCfMS0_FT6pluginCS_14PhoneRTCPlugin21peerConnectionFactoryCSo24RTCPeerConnectionFactory6configCS_13SessionConfig10callbackIdSS10sessionKeySS_S0_ in Session.o


  _get_field_types_Session in Session.o