Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> a5cab1c109438627ca58e3d1e1945db51990f676ccd075c56648e0d19eef8715:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^