Gui will be shown to all players

[ertlflorian1]

This Gui will be shown to all Players why?

addEventHandler("onClientMarkerHit", guimarker, 
    function(player) 
        lizensesfenster = guiCreateWindow(screenx/2-sizex/2,screeny/2-sizey/2, sizex, sizey, "Rathaus", false) 
        guiWindowSetSizable(lizensesfenster, false) 
  
        grindlist = guiCreateGridList(22, 40, 184, 206, false, lizensesfenster) 
        guiGridListAddColumn(grindlist, "Lizenz", 0.9) 
        for i = 1, 8 do 
            guiGridListAddRow(grindlist) 
        end 
        guiGridListSetItemText(grindlist, 0, 1, "Auto Führerschein", false, false) 
        guiGridListSetItemText(grindlist, 1, 1, "Motorrad Führerschein", false, false) 
        guiGridListSetItemText(grindlist, 2, 1, "LKW Führerschein", false, false) 
        guiGridListSetItemText(grindlist, 3, 1, "Bootsschein", false, false) 
        guiGridListSetItemText(grindlist, 4, 1, "Flugschein A", false, false) 
        guiGridListSetItemText(grindlist, 5, 1, "Flugschein B", false, false) 
        guiGridListSetItemText(grindlist, 6, 1, "Helikopterschein", false, false) 
        guiGridListSetItemText(grindlist, 7, 1, "Waffenschein", false, false) 
        guiGridListSetSelectedItem ( grindlist, 0, 0) 
        close = guiCreateButton(454, 25, 29, 30, "X", false, lizensesfenster) 
        guiSetProperty(close, "NormalTextColour", "FFAAAAAA") 
        fuererscheinlabel = guiCreateLabel(227, 77, 230, 61, liza, false, lizensesfenster) 
        preislabel = guiCreateLabel(227, 122, 33, 32, "Preis:", false, lizensesfenster) 
        preis = guiCreateLabel(272, 122, 126, 31, preisa, false, lizensesfenster) 
        kbutton = guiCreateButton(359, 116, 98, 27, "Kaufen", false, lizensesfenster) 
        guiSetProperty(kbutton, "NormalTextColour", "FFFEFFFF")      
        showCursor (true) 
        guiSetInputEnabled (true) 
        bild = guiCreateStaticImage(244, 165, 191, 76, "data/A.png", false, lizensesfenster) 
        guiGridListSetSortingEnabled (grindlist, false) 
    end 
) 

[iPrestege]

Why? it's client side and you chose the marker it won't show for all the players .

[Drakath]

guiSetVisible (lizensesfenster,false)

[TAPL]

just add this

if (player ~= localPlayer) then return end