Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 7a64c6cd290dc6ba67d2c50fffc9c373035858d0f70da00c97c98bb0542f38d2:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^