Wix.com query. Filtering multiple categories script errror

I´m building a wix.com page with wix.com code which should show some products. There are 3 dropdown menus on the page which are already working and 13 categories to click on. After being clicked a var turns true etc. With a maximum of 3 selected the product should be filtered to the selected categories, only showing the products the 3 categories apply on.

I´m getting an "Script error" when I click the filtering button having nothing selected. It only works when both "Picto5" and "Picto10" are true.(Showing all items that have one of the categories.. :/)

export function FilterButton_click(event) {

//Pictogramme
var PictoFilter5 = (Picto5 === true)
? "Pictogramm5": undefined;
console.log(PictoFilter5);

var PictoFilter10 = (Picto10 === true)
? "Pictogramm10": undefined;
console.log(PictoFilter10);



//Dropdowns
var emotionValue = ($w('#EmotionDropdown').value !== "alle")
? $w('#EmotionDropdown').value
     : undefined;

var kategorieValue = ($w('#KategorieDropdown').value !== "alle") 
? $w('#KategorieDropdown').value 
    : undefined;

var dekoValue = ($w('#DekoDropdown').value !== "alle")
? $w('#DekoDropdown').value
     : undefined;

//Query
wixData.query("Steine")
    //Dropdowns
    .eq('grosse1', kategorieValue)
    .eq('pictogramm1', emotionValue)
    .eq('symbolSerieName', dekoValue)

    //Pictogramme
    .contains("kategorie1Sortierung", PictoFilter5)
    .contains("kategorie1Sortierung", PictoFilter10)

    .find()
    .then (res => {
            $w('#repeater1').data =res.items;
            console.log("Filtered to " + kategorieValue +" "+ dekoValue +" "+PictoFilter5+" "+PictoFilter10);
    })
     .catch( (error) => {
let errorMsg = error.message;
let code = error.code;

} ); }

Thanks