Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 8b850d402aa77ea115873729aacd5b9ce225e55a50f34f7ffe1ef9a5cea2ec44:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^