Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 3a31783f7cab0fc2f52cd37069a0e55c3ffc460829117006e270ff5db8e071bb:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^