Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> f0e325f00bb1364403b86c0c34e693ff17effd5990b211ce39a7456fb498ff2b:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^