Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 0d151e3dba1522ca7dcb942440e63141eb04125616a9d2596882774d6e25f46a:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^