Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 224ccb17a0fc9b61e9b862a29c84b68c438f68aedcd1e359892a077cab8c8a19:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^