Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 656bb5c5ab053e7c85d4bcce2ea8fd50bbade51a1143124d442f52710fd4875c:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^