Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> ef7015a8e519ad88e4c7289c053f28350e584862a388d0dda379919ada6b1058:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^