Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> e6fb2a7fb249335652952526cc1ea93ff7686eb2004d8858fc33dfeaa71f7d9d:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^