Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 663f2c45effbbd26a8d572c337c27c21ed737390e1020d7a4bd72f82421616f8:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^