Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 4a2504557df636afba5ca1f2a50b1179e82b1791cd4ddc4a1ae845c5dffe77a9:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^