Code no -longer working after accidently syncing Sandbox to Live Data

Question:
I accidently synced my sandbox to the live data, and now the code no-longer works. I can’t see any obvious reasons why this has happened.

Product:
Wix Editor

What are you trying to achieve:
I would like the code to work again and the results be listed in the repeater.

What have you already tried:
I’ve checked the live data, and the ID’s are the same as before and checked help guides

Additional information:
This is the code:

// Import necessary WIX modules
import wixData from ‘wix-data’;
import wixWindow from ‘wix-window’;

$w.onReady(function () {
const startYear = 2000;
const endYear = new Date().getFullYear();
const decades = ;

// Generate list of decades
for (let year = startYear; year <= endYear; year += 10) {
    let decadeEnd = Math.min(year + 9, endYear);
    decades.push({
        _id: `${year}-${decadeEnd}`, // Unique identifier for each decade
        title: `${year}-${decadeEnd}`
    });
}

// Log the generated decades to ensure they are correct
console.log("Decades generated:", decades);

// Check if the decadeRepeater element is available
if ($w('#decadeRepeater')) {
    // Populate the repeater with the list of decades
    $w('#decadeRepeater').data = decades;

    $w('#decadeRepeater').onItemReady(($item, itemData) => {
        // Log itemData to ensure it's correct
        console.log("Item data:", itemData);

        // Ensure the decadeButton and decadeText elements are available
        if ($item('#decadeButton') && $item('#decadeText')) {
            // Set the text for the button and text elements
            $item('#decadeButton').label = itemData.title;
            $item('#decadeText').text = itemData.title;
            
            // Ensure the button click event is set correctly
            $item('#decadeButton').onClick(() => showYears(itemData.title));
        } else {
            console.error("Decade button or text element not found in the repeater item.");
        }
    });
} else {
    console.error("Decade repeater not found");
}

});

// Function to show years within the selected decade
function showYears(decade) {
let [startYear, endYear] = decade.split(‘-’).map(Number);
const years = ;
for (let year = startYear; year <= endYear; year++) {
years.push({
_id: year.toString(), // Unique identifier for each year
title: year.toString()
});
}

// Check if the yearRepeater element is available
if ($w('#yearRepeater')) {
    $w('#yearRepeater').data = years;

    $w('#yearRepeater').onItemReady(($item, itemData) => {
        $item('#yearButton').label = itemData.title;
        $item('#yearText').text = itemData.title;
        $item('#yearButton').onClick(() => showYearData(itemData.title));
    });

    $w('#decadeRepeater').collapse();
    $w('#yearRepeater').expand();
} else {
    console.error("Year repeater not found");
}

}

// Function to show data for the selected year
function showYearData(year) {
// Log to ensure the function is being called with the correct year
console.log(“Showing data for year:”, year);

wixData.query('repository')
    .eq('date', parseInt(year)) // Ensure date is queried as a number
    .find()
    .then(results => {
        // Log the results to ensure the query is returning the correct data
        console.log("Results from repository for year", year, ":", results.items);

        if (results.items.length > 0) {
            const items = results.items.map(item => ({
                _id: item._id, // Use the existing unique identifier from the repository
                title: `Data for ${year}`,
                // Add other fields from your CMS if necessary
                data: item
            }));

            // Check if the dataRepeater element is available
            if ($w('#dataRepeater')) {
                $w('#dataRepeater').data = items;
                $w('#dataRepeater').expand();
            } else {
                console.error("Data repeater not found");
            }
        } else {
            console.log(`No data found for year ${year}`);
            // Clear data repeater if no results found
            if ($w('#dataRepeater')) {
                $w('#dataRepeater').data = [];
                $w('#dataRepeater').collapse(); // Optional: Hide repeater if no data
            }
        }
    })
    .catch(err => {
        console.error("Error querying repository for year", year, ":", err);
    });

$w('#yearRepeater').collapse();

}

If you check the code in the editor, make sure that the collection has sandbox entries.
Also please clarify what you mean by “the code no-longer works”? (Does it throw an error or return an empty array?)

Thank you for your response.
I’m no-longer getting results in the repeater, and I was before, the array says 0.
How do I check is the code has sandbox entries?

You need to go to “Databases > Your Collection > Open Collection” Make sure that there are rows in the collection (between Live / Sandbox, select Sandbox)

Oh, yes the Sandbox data is populated and as far as I can see the data ids are the same.