Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 22b243e09c743b4ef000b41aaf361233296bb49c05e301c135a5f680ddbf9509:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^