Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> c2819198e9e53f675f2c26e34bfa2194d757c80b299533dfec01fe0c68f06e89:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^