Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> d5dde8c0f124c076d93d1572da972aa22ac1e5dc2fe8e79711b54d82e341d126:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^