Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> e05ab31e6f9d4d38eeb34c20c907002e99c4e0ec1c59b809df3f97e289b0360c:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^