objective c - IOS error about Sinch framework

Question

I want to do call function and I use Sinch.framework, but I had met this error when I add Sinch.framework to my project.

How to fix this error.

Answer 1

It looks like you have not added the required frameworks

AudioToolbox.framework
AVFoundation.framework
Security.framework

or added the other linker flags

-ObjC -Xlinker -lc++

you can find more info here https://www.sinch.com/docs/voice/ios/