Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> fe30922383f5e6a232fe917910e5f6b7663bca3b2a7ccfba8fb8addce865379c:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^