View Compilation Error

0_0_30913472_14723.cpp:50:10: error: expected '}' at end of input
   return Query
          ^
0_0_30913472_14723.cpp: In member function 'LL Persistent_Segment_Tree::Query(int, int, int, LL)':
0_0_30913472_14723.cpp:50:10: error: cannot convert 'Persistent_Segment_Tree::Query' from type 'LL (Persistent_Segment_Tree::)(int, int, int, LL) {aka long long int (Persistent_Segment_Tree::)(int, int, int, long long int)}' to type 'LL {aka long long int}'
0_0_30913472_14723.cpp:50:10: error: expected ';' at end of input
0_0_30913472_14723.cpp:50:10: error: expected '}' at end of input
0_0_30913472_14723.cpp: At global scope:
0_0_30913472_14723.cpp:50:10: error: expected unqualified-id at end of input