Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> ead20d00c1eba8a2242bd48cf7976eefba2f4ff6deeb86164564207f3d6bca9f:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^