Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 8ca6af5fa8cb039f99115eac726710a5ada845904da1f9d06c31ea6df9e3a991:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^