Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> ba2e612166ae4d0778c26c83113eaebbbcdfcc2f7d66664154e36360c180fac1:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^