If your buy or sell order is not properly completing (typically with an undefined error), simply increase your slippage tolerance. Typically, you don't have to increase it to any more than 2% (but the lower, the better). If that doesn't help, you can also try swapping rounded numbers, for example 10 $MUTE instead of 9.871342046815302394
Click anywhere outside of the "Transaction Settings" dialog to close it and verify your slippage is set to 2% or less.
Your trade should now successfully complete.