Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> ddab8e2b49036fd429876dc06db11252a434309e322389e595c5d891d6ac4735:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^