Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 4d0cfe85395a46453d5335dd2b7743eebeecb969e9bafd2e6a950a7993c14f7f:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^