Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 9d8334a041700b5862d140ef24abb854134c6cfb9f242f479cd5cd8212a18763:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^