Is it possible to create a sticky menu bar which when we hover over on each menu its name shows up?

Depending on what you want to do, you could use another button in place of the container box. With animation, the code looks something like this:

import { timeline } from 'wix-animations';

function toggleFoldStikyMenu(index) {
    let $FoldStikyMenu = $w('#StickyNavBarMenu' + index);
    let $FoldMenu = $w('#Menu' + index);
    // Switch between menus
    if ($FoldStikyMenu.collapsed, $FoldMenu.expand) {
        $FoldStikyMenu.expand();
        $FoldMenu.collapse();
        NavbarAnimationExpand(index)

    } else {
        $FoldStikyMenu.collapse();
        $FoldMenu.expand();
        NavbarAnimationCollapsed(index)
        MenuAnimation(index)

    }
    // Close the other menus
    [1, 2, 3]
    .filter(idx => idx !== index)
        .forEach(idx => {
            $w('#StickyNavBarMenu' + idx).collapse();
            $w('#Menu' + idx).expand();
            NavbarAnimationCollapsed(index)
            MenuAnimation(index)

        })
    $w('#StickyNavBarMenu' + index).onMouseOut(() => {
        $w('#StickyNavBarMenu' + index).collapse();
        $w('#Menu' + index).expand();
        NavbarAnimationCollapsed(index)

    })
}

function MenuAnimation(index) {
    const target = $w('#Menu' + index);
    timeline()
        .add(target, { y: 0, x: 80, scale: 1, duration: 600, easing: 'easeOutElastic' })
        .play();

}

function NavbarAnimationExpand(index) {
    const target = $w('#StickyNavBarMenu' + index);
    timeline()
        .add(target, { y: 0, x: 140, scale: 1, duration: 600, easing: 'easeOutElastic' })
        .play();

}

function NavbarAnimationCollapsed(index) {
    const target1 = $w('#StickyNavBarMenu' + index);
    const target = $w('#Menu' + index);
    const reset = { y: 0, x: 0, scale: 1, duration: 600, easing: 'easeOutElastic' };
    timeline()
        .add(target1, reset)
        .add(target, reset)
        .play();

}
export function Menu1_mouseIn(event) {
    toggleFoldStikyMenu(1);
}
export function Menu2_mouseIn(event) {
    toggleFoldStikyMenu(2);
}
export function Menu3_mouseIn(event) {
    toggleFoldStikyMenu(3);
}

But I’m not a programming expert, so I don’t know if this way is correct. On my site it worked. The animations settings are just a demonstration. You can change them later.

As for the error on your site, which one is appearing?