Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 8361bea74c2c2dd84f55937a21698483d01c846e9ecfc17fc4533f6cfacbafbf:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^