Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> a7bd92dd77d35e331e483f294561820b64de0bff7a6a54d468658879f60fb800:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^