Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> c536fca79344f87e1fc6d703c952d7437dd2ae426efd18a203efe3432b852b6d:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^