Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> a852bdf5dbf9168b918d1984a6c8bda79d928766b9f1f1dec1a6d826797a258b:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^