Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 364fc83a71c401c85d5fb4f40ccf6dd69c5f398238a8e1c46c48ab099be946dc:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^