Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 50beed4a5656dc26f289e9e42d2ce587271150946179c5c128b6ebddde7b9201:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^