Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> ddf610a508d2f4dcd5bca6878714de765e2df1f2e4ef7c6e49345cb27ebb0198:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^