Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 4b0821d17aa2a45c4c441c2c75b66703c78dac0625f8292ba90c52329a6e3fe2:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^