Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> d4dd528a985f3ef256a163256ec8bb62fe7a0fb2d96c3ec07e00f230f2d9acab:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^