Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 91309f23b8313b24ba82d6f2264f1ec9e5c003286eb9b10548a2d6f8bda73f73:14:8
   |
14 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^