Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> d3e7be7f81025bb786663f9243d9712c74a0f29b9ed1be39252d645e21737c1d:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^