ChangeSlide stopped working?

My site was working fine for awhile. I had some code changing a slider in the product page section, basically when you click a product it takes you to its page but changes the slider on the product pages so that it shows that products info etc (wix has a real lack of customizability for product pages)
anyways, this worked almost perfectly for awhile but I noticed that it now no longer works at all. The only way it does seem to work is through a direct link to the page, or if you went through the shop and get to the product page, you have to refresh it for that slider to change.

The super weird thing is that I was testing things out, created a text that will change based on which product is selected and that totally works, so its getting through the code all fine. but for some dumb reason the slider will not change anymore

Heres the code that used to work

$w.onReady( async () => {

$w( '#soundcloud1' ).hide(); 
$w( '#soundcloud2' ).hide(); 
$w( '#wixVodDevelop1' ).hide(); 
$w( "Document" ).background.src =  "https://static.wixstatic.com/media/647e6f_190b1ee2f1e24d6caec3a6656e2b411c~mv2.png" ; 

function showHALLO() {
$w( ‘#slideshow1’ ).changeSlide( 1 );
$w( “#text172” ).text = “HALLO” ;
$w( ‘#soundcloud1’ ).show();
}
function showRHYTHMUS() {
$w( ‘#slideshow1’ ).changeSlide( 2 );
$w( ‘#soundcloud2’ ).show();
$w( “#text172” ).text = “RHYTHMUS” ;
$w( ‘#wixVodDevelop1’ ).show();
}
$w( ‘#productPage1’ ).getProduct()
.then( (product) => {
let productsku = product.sku;
// see example product object below
if (productsku === ‘1001’ ){
showHALLO();
}
if (productsku === ‘1002’ ){
showRHYTHMUS();
}
} )
. catch ( (error) => {
console.log(error);
} );

});

Im also getting this error

TypeError: Cannot read property ‘moveToSlide’ of null at Object. (https://static.parastorage.com/services/wix-thunderbolt/dist/platform.aaea1735.chunk.min.js:1:11552) at https://www.narothaudio.com/product-page/rhythmus:105:2611 at Object.next (https://www.narothaudio.com/product-page/rhythmus:105:2716) at c (https://www.narothaudio.com/product-page/rhythmus:105:1455)"

Your site should be OK again in few minutes