Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 61ab89624a12f6fc467bde67620df3c979c1342e24f7a03bfd09f61727948630:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^