Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> bf8c7c602208da2bb22b87f42ca7e43ea9165c43dfc156162bae0a8228ec6bde:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^