Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 12928a84deb735270c7d6671a7be5de44afb9c817ca3c5a025f4ce1556d0bcd5:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^