Undefined array key 1

[Taelor Taylor]

Hi,

I am totally inexperienced with Joomla and website building in general, so your patience is very much appreciated!

I am getting this error on the top of my web page:

Warning: Undefined array key 1 in /public_html/templates/drloritaylor/library/Core/Content/Item.php on line 80

I have had a look at the <Item.php> file, but cannot make sense of it. The following is a copy of lines 71-85, with line 80 highlighted:

private function _buildIcon($text, $file, $alt, $wrapUpTooltip = false) {

        $app = Factory::getApplication();

        $src = Uri::root(true) . '/templates/' . $app->getTemplate();

        preg_match('/<a[^>]*>([\s\S]*?)<\/a>/', $text, $matches);

        $linkContent = $matches[1];

        $newLinkContent = '<img src="' . $src . '/images/system/' . $file . '" alt="' . $alt . '" />';

        $text = str_replace($linkContent, $newLinkContent, $text);

        if ($wrapUpTooltip) {

            preg_match('/title="([^"]*)"/', $linkContent, $matches);

            $tooltipText = $matches[1];

            $tooltipText = preg_replace('/<strong>(.*?)<\/strong><br \/>/', '$1 :: ', $tooltipText);

            $text = '<span class="hasTip" title="' . $tooltipText . '">' . $text . '</span>';

        }

        return $text;

    }

I am hoping someone will be able to give me an idea of how I should correct this error.

Thanks!

Taelor