Deactivate all plugins except All in One SEO Pack (and 2012). Confirm it works. Then reactivate each one at a time and check.
https://semperplugins.com/documentation/how-to-troubleshoot-issues-with-all-in-one-seo-pack/
I already tried just this one and no luck with Twenty Twelve theme.
Try turning on wp_debug and see if you get any errors in the log when browsing to the admin.
https://codex.wordpress.org/WP_DEBUG#WP_DEBUG_LOG_and_WP_DEBUG_DISPLAY
[05-Jul-2016 00:19:14 UTC] PHP Fatal error: Allowed memory size of 268435456 bytes exhausted (tried to allocate 85 bytes) in /home/username/public_html/genealogy/wp-includes/class-wp-post.php on line 240
[05-Jul-2016 00:19:32 UTC] PHP Fatal error: Allowed memory size of 268435456 bytes exhausted (tried to allocate 18 bytes) in /home/username/public_html/genealogy/wp-includes/post.php on line 1982
[05-Jul-2016 00:19:36 UTC] PHP Fatal error: Out of memory (allocated 361234432) (tried to allocate 32 bytes) in /home/username/public_html/genealogy/wp-includes/post.php on line 1982
[05-Jul-2016 00:19:46 UTC] PHP Fatal error: Out of memory (allocated 361234432) (tried to allocate 32 bytes) in /home/username/public_html/genealogy/wp-includes/post.php on line 1982
[05-Jul-2016 00:19:52 UTC] PHP Fatal error: Out of memory (allocated 361234432) (tried to allocate 87 bytes) in /home/username/public_html/genealogy/wp-includes/class-wp-post.php on line 240
Try increasing your memory limit.
Add the following to your wp-config.php
define( 'WP_MAX_MEMORY_LIMIT', '256M' );
https://codex.wordpress.org/Editing_wp-config.php#Increasing_memory_allocated_to_PHP
This site is already set to 256MB in the wp-config.
What other plugins were active when those errors were logged?
Is this still the default theme?
No plugins running when those errors hit. Below is more error logs. It looks like it is the sitemap generation.
[05-Jul-2016 01:31:29 UTC] PHP Fatal error: Out of memory (allocated 360710144) (tried to allocate 524288 bytes) in /home/username/public_html/genealogy/wp-content/plugins/all-in-one-seo-pack/modules/aioseop_sitemap.php on line 2505
[05-Jul-2016 01:31:45 UTC] PHP Fatal error: Out of memory (allocated 361234432) (tried to allocate 72 bytes) in /home/username/public_html/genealogy/wp-includes/post.php on line 1982
My site is LARGE. 37,460 Pages
Sites with a lot of posts/pages *shouldn’t* be a problem I have one with 1.2 million. 😉
I’d love to see if we can figure out the issue. Contact us here and we can look into it better. https://semperplugins.com/contact/
There are two issues that we identified:
1). the first is that you are using static XML sitemap instead of dynamic XML sitemap and your server is running out of memory or hitting a timeout before it can create all of the static files. Dynamic XML Sitemaps is the default option in All in One SEO Pack and it’s the one we strongly recommend using as it cuts down on these issues.
2). you have a number of 301 redirects in your .htaccess that redirect XML Sitemap URLs back to /sitemap.xml. This means that when you click on any indexed sitemap you get back to the root sitemap. You need to remove these 301 redirects or Google will not be able to crawl all of your XML sitemaps.
