Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 315d26272d867a33ea082172f2a42fce2d83042990a1d6e40c13354c1ead35d5:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^