Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> ecae3f5420d7493429559f7a2868ad94cbd03c56ab03890232bebccfed379097:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^