src/Debug/Output/HtmlErrorSummary.php
protected function buildInConsoleOneCat()
    {
        // find category
        foreach ($this->stats['counts'] as $category => $catStats) {
            if ($catStats['inConsole']) {
                break;
            }
        }
        if ($category == 'fatal') {
            return '';
        }
        $catStrings = array(
            'deprecated' => array(
                'header' => 'Deprecated',
                'msg' => 'There were %d deprecated notices',
            ),
            'strict' => array(
                'header' => 'Strict',
                'msg' => 'There were %d strict errors',
            ),
            'error' => array(
                'header' => 'Errors',
                'msg' => 'There were %d errors',
            ),
            'notice' => array(
                'header' => 'Notices',
                'msg' => 'There were %d notices',
            ),
            'warning' => array(
                'header' => 'Warnings',
                'msg' => 'There were %d warnings',
            ),
        );
        $countInCat = $catStats['inConsole'];
        if ($countInCat == 1) {
            $header = \ucfirst($category);
            $error = $this->getErrorsInCategory($category)[0];
            $msg = $error['file']. '(line '.$error['line'].'): '
                .($error['isHtml']
                    ? $error['message']
                    : \htmlspecialchars($error['message']));
        } else {
            $header = $catStrings[$category]['header'];
            $msg = \sprintf($catStrings[$category]['msg'], $countInCat);
        }
        $html = '<h3>'.$header.'</h3>'
            .'<ul class="list-unstyled indent">'
                .'<li class="error-'.$category.'">'.$msg.'</li>'
                .'</ul>';
        return $html;
    }
protected function buildInConsoleOneCat()
    {
        // find category
        foreach ($this->stats['counts'] as $category => $catStats) {
            if ($catStats['inConsole']) {
                break;
            }
        }
        if ($category == 'fatal') {
            return '';
        }
        $catStrings = array(
            'deprecated' => array(
                'header' => 'Deprecated',
                'msg' => 'There were %d deprecated notices',
            ),
            'strict' => array(
                'header' => 'Strict',
                'msg' => 'There were %d strict errors',
            ),
            'error' => array(
                'header' => 'Errors',
                'msg' => 'There were %d errors',
            ),
            'notice' => array(
                'header' => 'Notices',
                'msg' => 'There were %d notices',
            ),
            'warning' => array(
                'header' => 'Warnings',
                'msg' => 'There were %d warnings',
            ),
        );
        $countInCat = $catStats['inConsole'];
        if ($countInCat == 1) {
            $header = \ucfirst($category);
            $error = $this->getErrorsInCategory($category)[0];
            $msg = $error['file']. '(line '.$error['line'].'): '
                .($error['isHtml']
                    ? $error['message']
                    : \htmlspecialchars($error['message']));
        } else {
            $header = $catStrings[$category]['header'];
            $msg = \sprintf($catStrings[$category]['msg'], $countInCat);
        }
        $html = '<h3>'.$header.'</h3>'
            .'<ul class="list-unstyled indent">'
                .'<li class="error-'.$category.'">'.$msg.'</li>'
                .'</ul>';
        return $html;
    }
Returns summary for errors that were logged to console (while collect = true)

Assumes only 1 category of error was logged
However, multiple errors in this category may have been logged

@return string