Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 0272d0b52d3b4b58411342f055d202c8fadff14452e8f323b78564669ff9f6e9:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^