Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 944960dc2ddebfb421e2855cfba06f43f89f7168a69f23b3480c8e69399db1e6:14:28
   |
14 |                             let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^