Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 12c84f6416abc762a2d01f931c99729f87cd2d7cf8743446f3fdd84aeb2490c4:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^