Disable SerialOut

[schwos]

I have disable SerialIn but want to disable SerialOut and anytime I remove SERIAL_OUT(Serial) from the MENU_OUTPUTS but I end up with compiler errors as below. If I put the Serial_OUT back the error disappear and it compiles. What am I missing?

error: expected constructor, destructor, or type conversion before '(' token
#define CALL__(a,b,...) a##_##b(VA_ARGS<

------------------------------------Snippet of Code Below---------------------------------

`#define MAX_DEPTH 2

//serialIn serial(Serial);
chainStream<0> in(NULL);
//MENU_INPUTS(in,&serial);
//MENU_INPUTS(in, NULL);

// MENU_INPUTS(in,&encStream,&encButton);//,&serial);

MENU_OUTPUTS(out,MAX_DEPTH
,U8G2_OUT(u8g2,colors,fontX,fontY,offsetX,offsetY,{0,0,U8_Width/fontX,U8_Height/fontY})
//,SERIAL_OUT(Serial)
);

NAVROOT(nav,mainMenu,MAX_DEPTH,in,out);`

[schwos]

Nevermind, I figured it out needed to read the Wiki in a bit more detail..

MENU_OUTPUTS(out,MAX_DEPTH
,U8G2_OUT(u8g2,colors,fontX,fontY,offsetX,offsetY,{0,0,U8_Width/fontX,U8_Height/fontY})
//, SERIAL_OUT(Serial)
, NONE //<- Must has two items in the Macro but to have one output use NONE
);