i fixed your code bro :/

kernel/src/PageFrameAllocator.h

@@ -5,10 +5,11 @@
 #include "Bitmap.h"
 #include "memory.h"
 
-class pageFrameAllocator {
+class PageFrameAllocator {
     public:
     void ReadEFIMemoryMap(EFI_MEMORY_DESCRIPTOR* mMap, size_t mMapSize, size_t mMapDescSize);
+	Bitmap PageBitmap;
 
     private:
-    void InitBitmap(size_t bitmap, void* bufferAddress);
-}
+    void InitBitmap(size_t bitmapSize, void* bufferAddress);
+};