Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> eacf71048140a3d9e4bdc21bb045f38905196938efef76ce828191d45fa4d4c2:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^