Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> ea18378a4d2a1741c670f13fba0b25dc7657f209d731dd9a1957f511c09f6c79:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^