Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 30150f2f4ba1e4f7509a716b95b8ddcddc72b81260d3fa9007d661bf54c98f28:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^