Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 272b4b71b463bde9d126e86c78111b7c93205a237b8fd89c937cf54dc538d237:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^