Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 8a4b566390afb427b8b4811c22b40e29e51a158b92c8737b5b1fbd586dea9dd8:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^