Title: PHP Warning Last modified: October 20, 2016 --- # PHP Warning * [jarad.secco](https://wordpress.org/support/users/jaradsecco/) * (@jaradsecco) * [9 years, 9 months ago](https://wordpress.org/support/topic/php-warning-97/) * I am seeing the following warnings server-side. I believe these are resulting in some 5XX errors going out in Nginx. Based on the warning, I would guess that the plugin is not set to handle drafts with empty post content…? * 2016/10/20 16:27:17 [error] 1069#0: *240477 FastCGI sent in stderr: “PHP message: PHP Warning: DOMDocument::loadHTML(): Empty string supplied as input in /XXXXXX/ wp-content/plugins/fb-instant-articles/vendor/facebook/facebook-instant-articles- sdk-php/src/Facebook/InstantArticles/Transformer/Transformer.php on line 178” while reading response header from upstream, client: 172.31.46.188, server: localhost, request: “POST /wp-admin/admin-ajax.php HTTP/1.1”, upstream: “fastcgi://unix:/ var/run/php5-fpm.sock:”, host: “XXXXXX”, referrer: “[http://XXXXXX/wp-admin/post-new.php”](http://XXXXXX/wp-admin/post-new.php”); Viewing 4 replies - 1 through 4 (of 4 total) * [dandr69](https://wordpress.org/support/users/dandr69/) * (@dandr69) * [9 years, 9 months ago](https://wordpress.org/support/topic/php-warning-97/#post-8382550) * I have the same error. Any idea please? * Thread Starter [jarad.secco](https://wordpress.org/support/users/jaradsecco/) * (@jaradsecco) * [9 years, 9 months ago](https://wordpress.org/support/topic/php-warning-97/#post-8382636) * I believe the above warnings are non-fatal (they won’t crash the page render), and as such can just be ignored. Hopefully in the future the author(s) of the plugin will put in an is_null() check before the loadHTML() call to stop the warnings from being thrown. * In the case of the 5XX server-side errors we were seeing at the time, we came to the conclusion that they were coming from a memory limit. PHP was set to a 128M limit, and in some cases certain pages were exceeding that limit (at which point they would die and throw a 500 error). The fix for that issue was to increase the value of memory_limit in the php.ini configuration file. If you are seeing 500 errors client-side, I suggest you dig deeper into your error logs to see if there are other errors (and not just warnings) buried in there. - This reply was modified 9 years, 9 months ago by [jarad.secco](https://wordpress.org/support/users/jaradsecco/). * [dandr69](https://wordpress.org/support/users/dandr69/) * (@dandr69) * [9 years, 9 months ago](https://wordpress.org/support/topic/php-warning-97/#post-8382692) * I see also some mysql queries like this: * # Time: 161101 20:46:09 # User@Host: dsso_dandrsss[dansgo_dsssr69] @ localhost[]# Query_time: 93.176316 Lock_time: 0.050331 Rows_sent: 2218 Rows_examined: 6785 SET timestamp=1478025969; SELECT option_name, option_value FROM wp_options WHERE autoload = ‘yes’; * This repeats many times and crashes the server. Could it be a plugin? Which one? - This reply was modified 9 years, 9 months ago by [dandr69](https://wordpress.org/support/users/dandr69/). - This reply was modified 9 years, 9 months ago by [dandr69](https://wordpress.org/support/users/dandr69/). * [MartinCap](https://wordpress.org/support/users/martincap/) * (@martincap) * [9 years, 1 month ago](https://wordpress.org/support/topic/php-warning-97/#post-9254883) * I am getting this same error original PHP error posted by [@jaradsecco](https://wordpress.org/support/users/jaradsecco/). Viewing 4 replies - 1 through 4 (of 4 total) The topic ‘PHP Warning’ is closed to new replies. * ![](https://s.w.org/plugins/geopattern-icon/fb-instant-articles_8fa0a4.svg) * [Instant Articles for WP](https://wordpress.org/plugins/fb-instant-articles/) * [Frequently Asked Questions](https://wordpress.org/plugins/fb-instant-articles/#faq) * [Support Threads](https://wordpress.org/support/plugin/fb-instant-articles/) * [Active Topics](https://wordpress.org/support/plugin/fb-instant-articles/active/) * [Unresolved Topics](https://wordpress.org/support/plugin/fb-instant-articles/unresolved/) * [Reviews](https://wordpress.org/support/plugin/fb-instant-articles/reviews/) * 4 replies * 3 participants * Last reply from: [MartinCap](https://wordpress.org/support/users/martincap/) * Last activity: [9 years, 1 month ago](https://wordpress.org/support/topic/php-warning-97/#post-9254883) * Status: not resolved