Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 6d552eec1f2cd269ba15454be6832d407dea95c606434d74f906fe487dee67db:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^