Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 320a1a9e371ff91216d5881b2f819be7060e2d5048c87231e0fac16bba9e1eeb:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^