Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 1a4ff16ca8f52837d69683340616b5a2daaa7f0a3d70f716810b8d62a0d5efbd:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^