Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> e038bc275adeca23e7f033af28c4bb6a80d24d01a4feb85a1bd4df6b60f803ed:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^