Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> e7c92a013668e2784fc13ef9b4db784bf83f0f3db1914fbdba0bc56bf3a81ade:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^