Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 291a1da97e85c87475051d545f1730268652d36bdfae0203074f4eec77e38eae:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^