Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> ff2064301ec42e2982c71cc8933193d1639f96eae03a8c85977266deba51ade9:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^