Repeater refresh different Editor to Live Site

I have encountered a situation that has me puzzled at the moment. I am trying to refresh a repeater; the refresh works when I run the page from the Editor, either from the Run or Preview buttons, but it does not work in either a Test Site or the Live Site. If anyone can give me an idea as to what is happening, I would be grateful. 

I created this site for a client about four years ago. He organizes and leads adventure scuba expeditions to various sites around the world. There is a site page to gather data about Members (not the Wix Member collection, a separate one): the usual identity and contact info, plus data on the members qualifications and certifications which determine if they can go on a specific trip. I was asked to add the capability for the Member to upload an image of their passport. 

The following are portions of the code. Live site is www.brave-diving.com

/* -------------------------------------------------------------------- */
export function btnUpdatePassportImage_click(event) {
    $w('#uploadButton1').show();
    $w('#collapsibleTextLoad').show();
    $w('#btnUploadPassportImage').show();	

}
/*-------------------------------------------------------------------- */
export async function btnUploadPassportImage_click(event) {
    if ($w('#uploadButton1').value.length > 0) {
        $w('#uploadButton1').startUpload()
        .then ((UploadFile)=> {
            imgUrl = UploadFile.url;
            $w('#btnMessage').label = "Upload Successful";
            let errorMessage = $w('#btnMessage');
		    errorMessage.show("bounce");
		    setTimeout(() => {
			    errorMessage.hide("bounce");
		    }, 3000);
        refreshRepeater();
        });
        
    } else {
        $w('#btnMessage').label = "Please specify a file to upload.";
        let errorMessage = $w('#btnMessage');
		errorMessage.show("bounce");
		setTimeout(() => {
			errorMessage.hide("bounce");
		}, 3000);
    }
}
/* -------------------------------------------------------------------- */
function refreshRepeater() {

   // put imgUrl into an array for the repeater
    const imgUrlArray = [
        {_id: '1', repeaterUrl : imgUrl}
    ];
   
    $w("#repeaterPassportImage").onItemReady( ($item, itemData) => {
        $item("#imgPassportPg").src = itemData.repeaterUrl          
    })
	
    $w('#repeaterPassportImage').data = imgUrlArray;
    $w('#imgPassportPg').show();
}