Reference to a non-exported function in 'SocketIOModule'

[Dhruvi109]

Error: Failed to compile.

ERROR in Error during template compile of 'AppModule'
Reference to a non-exported function in 'SocketIOModule'
'SocketIOModule' contains the error at nativescript-socketio/angular/index.ts(25,10).
below are the details of package json

"tns-android": {
"version": "5.0.0"
},
"tns-ios": {
"version": "5.1.0"
}

"@angular/compiler-cli": "~7.1.0",
"@ngtools/webpack": "~7.1.0",

we are facing above issue only in IOS when we execute following command

tns build ios --bundle --env.aot --env.uglify;

Has anyone ever had this problem? Need help.