Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> afe9dce253bc841aa1b6a988bab56d422e16f9edb518112cf3bdcbd5ffef78ac:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^