Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 7009aac825de00a576c6435e9dd945ed425725f2d4d022486e6cc00018ea3c19:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^