Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 31b840a4ff7080c54cbf2429b81f0a735784c7bce8e3a151c101215d446debfa:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^