Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 562943dca5910288512ad4fc3c7414a2f69ac1665483f7e164e9c2fce7526c0f:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^