Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 124479b064c1f99646d7cb1b04cc29a898a98b0da99e3a76d92c5d0bf68931c0:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^