Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 2ae549c378453eed5142e7fa6485b6103dba00e72a848eff24e22315398d65dc:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^