Fatal error: Uncaught Error: Object of class WP_Error could not be converted to string
in /home/otoliebe/otoliebe.com/public_html/wp-content/themes/original-theme/functions/functions.php on line 142

コールスタック:

1. mb_convert_encoding()
   wp-content/themes/original-theme/functions/functions.php:142
2. get_instagram_posts()
   wp-content/themes/original-theme/templates/page/front-page.php:82
3. require()
   wp-includes/template.php:812
4. load_template()
   wp-includes/template.php:745
5. locate_template()
   wp-includes/general-template.php:206
6. get_template_part()
   wp-content/themes/original-theme/front-page.php:16
7. include()
   wp-includes/template-loader.php:106
8. require_once()
   wp-blog-header.php:19
9. require()
   index.php:17