Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 371d22c8a1aa2d2350a7998700198d2ffefb77842a857e2676a9f9d53599ae6f:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^