Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 52a1e0a0c1d0607011e77dce34374057d8e669cc11bcb36e0fbe6d9d056e5d0f:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^