Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> a0f18d7ad31ecaac8a1c0acc65cda532d1079d7da181309d74b4d409ffc5deef:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^