Unable to run flutter after audio players package import

[karthik vaithin]

I imported following sound package from flutter packages.

audioplayers: ^0.12.1

It threw errors saying I needed to install some things. Based on the error messages, I ran following commands. 

brew install cocoa

pods pod setup

The setup was completed successfully. 

It started throwing errors when I tried to run my application after this. The app is nothing but a stateless widget with an empty MaterialApp() widget. This was working fine before I did the above installs. 

I tried removing the audioplayers dependencies but the error persists. Trying to rebuild and restart my IDE doesn't help. Please advice whats wrong. I don't get why the error persists even after removing the dependency. I am using a Mac if that matters. Please advice. Thanks. 

Error Log: 

    Launching lib/main.dart on iPhone X in debug mode...
    Running pod install...
    Running Xcode build...
    Xcode build done.                                            1.9s
    Failed to build iOS app
    Error output from Xcode build:
    ↳
        ** BUILD FAILED **
   
   
    Xcode's output:
    ↳
        === BUILD TARGET path_provider OF PROJECT Pods WITH CONFIGURATION Debug ===
        /Users/myusername/.pub-cache/hosted/pub.dartlang.org/audioplayers-0.12.1/ios/Classes/AudioplayersPlugin.m:232:5: error: use of undeclared identifier 'AVAudioSessionCategory'; did you mean 'AVAudioSessionCategoryRecord'?
            AVAudioSessionCategory category;
            ^~~~~~~~~~~~~~~~~~~~~~
            AVAudioSessionCategoryRecord
        In module 'AVFoundation' imported from /Users/myusername/.pub-cache/hosted/pub.dartlang.org/audioplayers-0.12.1/ios/Classes/AudioplayersPlugin.m:4:
        /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator11.2.sdk/System/Library/Frameworks/AVFoundation.framework/Frameworks/AVFAudio.framework/Headers/AVAudioSession.h:642:28: note: 'AVAudioSessionCategoryRecord' declared here
        AVF_EXPORT NSString *const AVAudioSessionCategoryRecord;
                                   ^
        /Users/myusername/.pub-cache/hosted/pub.dartlang.org/audioplayers-0.12.1/ios/Classes/AudioplayersPlugin.m:232:27: error: expected ';' after expression
            AVAudioSessionCategory category;
                                  ^
                                  ;
        /Users/myusername/.pub-cache/hosted/pub.dartlang.org/audioplayers-0.12.1/ios/Classes/AudioplayersPlugin.m:232:28: error: use of undeclared identifier 'category'
            AVAudioSessionCategory category;
                                   ^
        /Users/myusername/.pub-cache/hosted/pub.dartlang.org/audioplayers-0.12.1/ios/Classes/AudioplayersPlugin.m:234:9: error: use of undeclared identifier 'category'
                category = AVAudioSessionCategoryAmbient;
                ^
        /Users/myusername/.pub-cache/hosted/pub.dartlang.org/audioplayers-0.12.1/ios/Classes/AudioplayersPlugin.m:236:9: error: use of undeclared identifier 'category'
                category = AVAudioSessionCategoryPlayback;
                ^
        /Users/myusername/.pub-cache/hosted/pub.dartlang.org/audioplayers-0.12.1/ios/Classes/AudioplayersPlugin.m:239:34: error: use of undeclared identifier 'category'
                            setCategory: category
                                         ^
        /Users/myusername/.pub-cache/hosted/pub.dartlang.org/audioplayers-0.12.1/ios/Classes/AudioplayersPlugin.m:232:5: warning: expression result unused [-Wunused-value]
            AVAudioSessionCategory category;
            ^~~~~~~~~~~~~~~~~~~~~~
        1 warning and 6 errors generated.
   
    Could not build the application for the simulator.
    Error launching application on iPhone X.