Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 81a5db845c75b89b714cfd22e6350649e492c85d678db08e6f50707f727e67ef:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^