Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 771d09ca2c44b663018549fd47dd9b687861f687d5f588f4092d72c3821fe777:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^