Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> bb8ea896a6343a8523977299f1622e096599db4d1cddaa04b2350271160f05cc:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^