Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 81a11d2682ae531aa6861301b655e9b042c5721c852c154ae92f6deb8625fab7:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^