Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 8c113e2c9efab87a5c21a26eaac437ee2a44f1f8ab4cca5910b64b01a512f293:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^