Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 6ea4be8a60f2e773e0c2f237ab51f8aa59ca338a6e8f23788498350b40120ba5:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^