Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 14ae6008f37d1c8e4dbbc2c8f02618a987ce869f1822bfc5841747f525065dd6:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^