Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 3ae81468708a9147c525235854cb77881d9b7f8c8246319067a2ff33c1db6516:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^