Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 8abd3229926215c70162305216e0a206164cc35c6759e7a459f0b12ed0e7ae92:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^