Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> d7fe513b32bec8a99285a0fc96fc2ac789139f2c1eed4399075f49ac30ad8d96:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^