Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 1f20480945db440619373f21377f51e6f77645f80ab6ba8eb91b27ad11c4119a:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^