Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 2a390ec8b722de016af51ba5e2b764709b69b2e813272a182ff840e096348fda:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^