Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 734659886de6a97d298ec7de890a5bf360811b43427729187c576e2eb5e17891:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^