Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> f31e5ef05b6a0e7641127f81456589eee228c1a9bbe2cac9471ca97f7c5edbfa:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^