View Compilation Error

0_0_25992798_30906.cpp: In instantiation of 'void ACAutomation<N, Node, CodeFn>::build() [with int N = 300010; Node = Node; CodeFn = LowerCase]':
0_0_25992798_30906.cpp:104:11:   required from here
0_0_25992798_30906.cpp:36:22: error: 'size' is not a member of 'Node'
    for (int i = 0; i < Node::size; i++) if (np[c].ch[i] != 0) {
                      ^