CODE_ERROR

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

[Error Code: 1101] cadence runtime error Execution failed: error: underflow --> 8adbc19c769753bca75203642d44a8261d30927c821b95225868a99e810dcb0a:17:16 | 17 | } else {let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I2B1;let f2 = fee * I2 / scale + feefee*B2/scale;res = f1*scale/f2;} | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^