Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> a396cc5c2637ece5da0c8630355bcfc86f24f5a9feb1f768d6b53e1d21dddba7:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^