Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 815082f4db9351fd59f21ea1d311400848d345d1ae1d9609de73fcacc593f869:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^