Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 46517be5a1f799ce7a91dbc810f3c57cf2dcce5e3aac5f89330268cbe25fc740:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^