Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 2a5411d3d311fd766e263df5363b8b2ef11cff9f1bcb9d470c5149500e3f0dae:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^