Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 528101df8e8ab54d6a2ef087f2d671d9d6772f880cfcc8a3f78e46d91a86d13f:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^