Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 8934de1949ca5ab9ed76170070025159d406fc33bc2ee9e10b06cf49a834d480:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^