Professional WordPress Plugins and Services. wpDiscuz, WooDiscuz, Advanced Post Pagination
I am getting this error sporadically when trying to post a new topic, then the forum slows way down, any ideas or help appreciated!
Warning: strpos () expects parameter 1 to be string, array given in /home/customer/www/mywebsite/public_html/wp-content/plugins/wpforo-embeds/wpforoembeds.php on line 541
Please use WordPress Tools > Health Checker and make sure you don't have WordPress loopback problem. If you have it, you should disable other plugins and check that one by one. Please read this topic, this cases was jReviews plugin, but in your case, it could be other plugins: https://wpforo.com/community/how-to-and-troubleshooting-2/slow-when-posting-a-new-topic/paged/2/#post-37642