Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 21a77eb8231dacc7f4d584d7ffb9f6239b356c8481a505fa4e547f3daebcd0a2:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^