GeoLocator in flutter

Hello dear when i use geolocator after i'll get this error Could not build the precompiled application for the device. Error (Xcode): Undefined symbol: OBJC_CLASS$_LocationServiceStreamHandler

Error (Xcode): Undefined symbol: OBJC_CLASS$_PositionStreamHandler

Error (Xcode): Linker command failed with exit code 1 (use -v to see invocation)

Error launching application on iPhone. and didn't app running so plz guide i'm a too much upset

GeoLocator in flutter
 
 
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