Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> a67ed31d0737394728fcffa123d6e0432d1fe1ad42bfdcb41da1646d7975e1ba:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^