Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 48abf3b96462fd343818e40aa19735d4c5cc88b6289e2df7238631a52ecab400:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^