Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 3e25c3be441d2707db673a00dad4022f2c226e881ca12cd95fe4215a01ec11df:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^