Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 4396c4edc8f8966aca8c6b06cd8779b0d0fa6044866315dcb06fd0dacf162cfb:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^