View Compilation Error

0_0_31572545_9895.cpp:180:67: error: 'cons' has not been declared
 template <typename T> Modular<T> operator+(const Modular<T>& lhs, cons
                                                                   ^
0_0_31572545_9895.cpp:180:67: error: expected ',' or '...' at end of input
0_0_31572545_9895.cpp:180:67: error: expected ')' at end of input
0_0_31572545_9895.cpp:180:67: error: expected initializer at end of input