Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> b8cd76c995b42f17c16756a8ce366bd7eab34a79e21d2d110d47d789df01222e:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^