Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> afa5522440effb04e48440dcb2e131530970533d6cdf21f94bb495dd4f4974a8:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^