CODE_ERROR

There is an error in the cadence code of this transaction.

[Error Code: 1101] cadence runtime error Execution failed: error: underflow --> 81c9b2c55aacc97ef99d47e826015affe0064b283de097f69bfbf4db17de9ebe:14:8 | 14 | let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^