Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> ddd3388dc133c8d130ea61fc75b2cfb8c7a258a36cd0242b6b1fa76144a110cf:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^