Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 3ed3a12eded642e1cae500d1fcdb31a1a1a96185e8c19324ecd9a8bcaa442201:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^