Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 0a93ce1107ffbd91ebe7483461fe7f16107f87de0decf73c34532b42813b67da:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^