Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> cb41b6b85b790c3d49376b7bc6052d623b5f22712668e8e3dea041445986868d:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^