Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> bcfa5e06e24b3d867da744f2416c5b3c9c2e7832d9a5c61b1244e6241c808c4a:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^