Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 8147f3062d34836edbe375a475d25f298fb1dd1afc46ffb2d6af9db5c25ec9b3:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^