Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 214cf0567cc0cce90416a40ee54f0cffc890002bd672fe92b8dead74fd47ed74:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^