View Compilation Error

0_0_37505751_6562.cpp: In function 'std::pair<std::vector<int>, int> Dijkstra(Graph<T>&, int)':
0_0_37505751_6562.cpp:51:18: error: expected unqualified-id before '[' token
             auto [v,w]=g.e[i];
                  ^
0_0_37505751_6562.cpp:52:20: error: 'v' was not declared in this scope
             if(dis[v]<=dis[u]+w)continue;
                    ^
0_0_37505751_6562.cpp:52:31: error: 'w' was not declared in this scope
             if(dis[v]<=dis[u]+w)continue;
                               ^
0_0_37505751_6562.cpp:53:17: error: 'v' was not declared in this scope
             dis[v]=dis[u]+w;
                 ^
0_0_37505751_6562.cpp:53:27: error: 'w' was not declared in this scope
             dis[v]=dis[u]+w;
                           ^