Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> a35e40ce6822799fc6980ed04166b8fde67517614b924ac88a1160bf907bcdf7:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^