Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 71ec574845a5decf0463c8136280ee7f9c4e10e5cd6f0480a5df7576823db258:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^