Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 1328d542b219b10270a6abfc2b06734c2a881b7936c7a777e94eff199836cabf:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^