Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> eac374dec9f40cd7545a7d8297bf2592b127284ca4b8e1b4652b792fb883c90a:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^