Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> a44aaea59e406b17a1589f76f15912e97e8bbf4d2fb33c256a560f6f7ce4abd7:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^