Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 1dcd4954332a4f7e6a736592681a0d3547f74552eabb9726ef3dca6ba89ea3f6:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^