Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 9e2cbd1ff6150c41b64071743d654e040f2dfc2ff82e23c6bd9743f6d9239041:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^