Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> b7e59067515141f1477e3d32a6212fbd7ef1ec630861b1a93944ca5aa000dcc9:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^