Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 89801cef6412e7208e4edaaff5a1c25b2ff97b1e94fcfb4cd540fd95343b920a:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^