Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> be69f978f8f6082b613c814ed3e144f16781c2acf4dc084cb913174ed0e35e43:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^