Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> ba394e0c0e8914eea60a9ebfbfd445d3fece6b1eb3d9da22511f581b956a8123:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^