Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 8c3a7a56fc35458656daaeb48c0fab0b36bc4fda03a9c7199794d1fd60a54df5:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^