Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 85eac42999806779060951a6bb418021fa553bfa596dee23f9c4821ad0064818:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^