Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 7ddd7920d7b47dd590c631c333fc935abbfecb6a1d9b465a89d50a1128dad6d0:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^