Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 5d3128c9b0477b27b3637076c077ffc6140d86022f4738e824a478a2339cf4e5:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^