Call to a member function toArray() on null - laravel

Question

I am trying to get value of meta key from table called site.management
this table
=>http://www.mediafire.com/file/pa4gs0pbwpoalqj/Homemetakey.PNG/file
public function index()
{
if (Schema::hasTable('site_managements')) {
$homepage = SiteManagement::getMetaValue('homepage');
if (!empty($homepage['home'])) {
$sections = Helper::getPageSections();
$selected_page = Page::find($homepage['home']);
$page_data = $selected_page->toArray();
$page = array();
$home = true;
$page['id'] = $page_data['id'];
$page['title'] = $page_data['title'];
$page['slug'] = $page_data['slug'];
$page['section_list'] = !empty($page_data['sections']) ? Helper::getUnserializeData($page_data['sections']) : array();
$description = $page_data['body'];
$page_meta = SiteManagement::where('meta_key', 'seo-desc-' . $homepage['home'])->select('meta_value')->pluck('meta_value')->first();
$page_banner = SiteManagement::where('meta_key', 'page-banner-' . $homepage['home'])->select('meta_value')->pluck('meta_value')->first();
$show_banner = SiteManagement::where('meta_key', 'show-banner-' . $homepage['home'])->select('meta_value')->pluck('meta_value')->first();
$breadcrumbs_settings = SiteManagement::getMetaValue('show_breadcrumb');
$show_breadcrumbs = !empty($breadcrumbs_settings) ? $breadcrumbs_settings : 'true';
$show_banner_image = false;
if ($show_banner == false) {
$show_banner_image = false;
} else {
$show_banner_image = true;
}
$banner = !empty($page_banner) ? Helper::getBannerImage('uploads/pages/' . $page_banner) : 'images/bannerimg/img-02.jpg';
$meta_desc = !empty($page_meta) ? $page_meta : '';
$type = Helper::getAccessType() == 'services' ? 'service' : Helper::getAccessType();
$slider_section = '';
$slider_style = '';
$slider_order = '';
foreach ($selected_page->meta->toArray() as $key => $meta) {
preg_match_all('!\d+!', $meta['meta_key'], $matches);
$meta_key_modify = preg_replace('/\d/', '', $meta['meta_key']);
if ($meta_key_modify == 'sliders') {
$slider_section = Helper::getUnserializeData($meta['meta_value']);
$slider_style = !empty($slider_section['style']) ? $slider_section['style'] : '';
$slider_order = !empty($slider_section['parentIndex']) ? $slider_section['parentIndex'] : '';
}
}
$categories = Category::latest()->get()->take(8);
$skills = Skill::latest()->get()->take(8);
$locations = Location::latest()->get()->take(8);
$languages = Language::latest()->get()->take(8);
$page_header = '';
$currency = SiteManagement::getMetaValue('commision');
$symbol = !empty($currency) && !empty($currency[0]['currency']) ? Helper::currencyList($currency[0]['currency']) : array();
if (file_exists(resource_path('views/extend/front-end/pages/show.blade.php'))) {
return View::make(
'extend.front-end.pages.show',
compact(
'symbol',
'page_header',
'page',
'meta_desc',
'banner',
'show_banner',
'show_banner_image',
'show_breadcrumbs',
'selected_page',
'sections',
'type',
'slider_style',
'slider_section',
'description',
'slider_order',
'home',
'categories',
'skills',
'locations',
'languages'
)
);
} else {
return View::make(
'front-end.pages.show',
compact(
'symbol',
'page_header',
'page',
'meta_desc',
'banner',
'show_banner',
'show_banner_image',
'show_breadcrumbs',
'selected_page',
'sections',
'type',
'slider_style',
'slider_section',
'description',
'slider_order',
'home',
'categories',
'skills',
'locations',
'languages'
)
);
}
} else {
if (file_exists(resource_path('views/extend/front-end/index.blade.php'))) {
return view('extend.front-end.index');
} else {
return view('front-end.index');
}
}
}
}
and am getting this error
Call to a member function toArray() on null
every thing was working fine but an interruption happened in my DB and I resorted it but home index after login gives me the mentioned error
Call to a member function toArray() on null
*(the project on laravel 5) *
what is the problem here?