Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 85f4562120aa9886283d0cb55db3682594c1afeeeb3a30de3e745a889b5c196d:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^