Cannot build ionic ios app on xcode

I am trying to build ionic ios app on xcode using the following command

ionic cordova build ios

The build fails with the following error:
CompileC /Users/tejaswinc/Library/Developer/Xcode/DerivedData/Jeerapowder-frhcunbpeetdvhennafqofxmeoaq/Build/Intermediates.noindex/Jeerapowder.build/Debug-iphonesimulator/Jeerapowder.build/Objects-normal/x86_64/OneSignalPush.o /Users/tejaswinc/jeerapowder/jpUserLatest/platforms/ios/Jeerapowder/Plugins/onesignal-cordova-plugin/OneSignalPush.m normal x86_64 objective-c com.apple.compilers.llvm.clang.1_0.compiler

(1 failure)

OneSignalPush.m file is already present.