Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> b10a8ec2de47d3554ea09182966cf3832963d246b3a482b0a135a3c8e24ed1f8:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^