Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 6eaf4a5be25e31a37c98edb02ffa48c04db46da2c0c50e510ecdc806f12f8261:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^