Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> ef85145da747ed2956cac79c48d3b1fa0bd5b48c4a1ef2f6a821f7719fe306f5:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^