Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 11e9fca5a6427af120f3bb25ebe69b77a6a96f045d6fce81c5067154a0fc84e6:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^