Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> d99d894dcaf346830b49afc7c2afb375e8f4011d89901b83baa1502bb578c673:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^