Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> e01ea4c67575142e7dc870ad51a7c8c686d7d3cfcdfe72ccbf454018aab1addf:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^