getting this error in console

Error while compiling HeliRide: 'BaseHelicopter' does not contain a definition for 'InitalizeWeakspots' and no accessible extension method 'InitalizeWeakspots' accepting a first argument of type 'BaseHelicopter' could be found (are you missing a using directive or an assembly reference?) | Line: 433, Pos: 22
(Filename: C:\buildslave\unity\build\Runtime/Export/Debug/Debug.bindings.h Line: 35)