Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> a9b0d4da7567f29f658d32870229e8fbc2d8a7193c8b662703c978350888f251:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^