View Compilation Error

0_0_38714892_4313.cpp: In function 'void bfs(int, ll)':
0_0_38714892_4313.cpp:50:59: error: use of an operand of type 'bool' in 'operator++' is forbidden in C++17
   50 |                                 vis[GL[tmp.first][i].first]++;
      |                                 ~~~~~~~~~~~~~~~~~~~~~~~~~~^