Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 05f1b4f7f27555b27f98fa9464377f032917469fc8c08c9ca4c10c9ded7b31af:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^