Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 4fa90876f54ebecdad05a1392f4cd74da673f56ddd556e61c07e00070f627cfb:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^