Question2Answer fatal error:<p style="color: red">Class for layer must be declared as &quot;class qa_html_theme_layer extends qa_html_theme_base&quot; in /var/www/avukatasor.biz/public/qa-plugin/avukatasor-seo-fixes/qa-seo-layer.php</p><p>Stack trace:<p><code style="color: #999">require() in index.php:109</code><br><code style="color: #999">require() in qa-index.php:189</code><br><code style="color: #999">qa_output_content() in qa-page.php:53</code><br><code style="color: #999">qa_load_theme_class() in page.php:353</code><br>