Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> f2276ba05427d1cdd6c155d8b95a3bfcffe6606c8e66425e19d3aae0d65e780b:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^