Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> bc76af8efa0e0d88d1f912d3f1b5b96a633c52e07639f1f882e8e47e1278eb79:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^