PMA\libraries\config\PageSettings::_storeError PHP Method

    private function _storeError(&$form_display, &$error)
    {
        $retval = '';
        if ($error) {
            $retval .= $error->getDisplay();
        }
        if ($form_display->hasErrors()) {
            // form has errors
            $retval .= '<div class="error config-form">' . '<b>' . __('Cannot save settings, submitted configuration form contains ' . 'errors!') . '</b>' . $form_display->displayErrors() . '</div>';
        }
        $this->_errorHTML = $retval;
    }