Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 127f36915c3f0f6fe5998b50a3e895c4d8d466f3ecb3d00a464c3451fecfab37:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^