Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 123eb150105f9793deb9f50b67b13e656a28059fda1c50fae9c5565cb5678068:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^