Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 3ac0c0e1dad017f08fca5c36c64b26c987debbfa5a73fdacc7d1bab7e0809acf:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^