Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> e5f84293b70df09bfe061d9bad7d1ae8d4dd54d2df556ad2df18a69ae528e99c:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^