View Compilation Error

0_0_33614762_28793.cpp: In function 'void solve()':
0_0_33614762_28793.cpp:55:64: error: too many arguments to function 'long long int mod_inverse(long long int)'
    : (q * (qpow(q, n) - 1 + MOD) % MOD * mod_inverse(q - 1, MOD) % MOD);
                                                                ^
0_0_33614762_28793.cpp:34:18: note: declared here
 inline long long mod_inverse(long long a) {
                  ^