Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> fac3a892e69301707f9a3dea17c8b35fd9130d55f6ba6f9b1ed011346f218591:14:32
   |
14 |                                 let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^