Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> bc9ec5e9febd84efbff0e26745669b0928e4504d0f66aa8f3a4f86c87aa9e60d:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^