Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 6461c60bbe2251375dd65369cfcc630bdd8a3556f538deaa9d9757a9e339bf09:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^