Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> deae0b81af3a1d52c9d0c270f0b5745f7badf8e2d824b3be4825d1fc2b310a49:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^