Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 685e2eca9060a0a4e324d73120b86072b988a06cf61c9d42da8c9b4c358e0906:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^