Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 432e85bd921de17accbf909867b58857ee2b30dd82bbc3383a2cbe90967bb804:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^