Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 17ee19cae0dd00edd273dd6b4a98a0197b024531a72fe0f5cf2922496274f271:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^