Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> ce597b46d14ef84a9e8f3c0438afba47b49ff1e39b29206749359081ad47e137:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^