Support » Fixing WordPress » Http 500 error

  • Hi Guys!

    I have a big problem on my site. I have a http 500 error. I already set back a backup site but that didn’t solve it. I also tried to disable all plugins and increasig the memory limit and even replaced wordpress core files but nothing worked. After replacing a backup site, i can get into the admin panel but after a few click in the admin panel, i get the http 500 error again.

    I really hope someone could help me with this and could look into my site!

    Thanks

    The page I need help with: [log in to see the link]

Viewing 15 replies - 1 through 15 (of 19 total)
  • Moderator Steve Stern (sterndata)

    (@sterndata)

    Forum Moderator & Support Team Volunteer

    Errors like this are logged. Check the error log on your server. If you can’t find the log, please contact your host.

    Meantime, enable wp_debug and wp_debug_log and after an error, look at wp-content/debug.log to see if anything gets logged there. https://wordpress.org/support/article/debugging-in-wordpress/

    Thread Starter jesse120502

    (@jesse120502)

    Thanks for your reply Steven!

    I enabled debugging but nothing gets logged.

    This is the error log is get from the server:

    [Sun Mar 21 16:12:25.800164 2021] [lsapi:error] [pid 967575:tid 140662471001856] [client 92.109.206.88:63288] [host http://www.vcwaterland.nl] Backend fatal error: PHP Fatal error: Uncaught Error: Call to undefined function wp() in /home/u12515p9108/domains/vcwaterland.nl/public_html/wp-blog-header.php:16\nStack trace:\n#0 /home/u12515p9108/domains/vcwaterland.nl/public_html/index.php(17): require()\n#1 {main}\n thrown in /home/u12515p9108/domains/vcwaterland.nl/public_html/wp-blog-header.php on line 16\n
    [Sun Mar 21 16:12:26.430596 2021] [lsapi:error] [pid 970415:tid 140662250714880] [client 92.109.206.88:63288] [host http://www.vcwaterland.nl] Backend fatal error: PHP Fatal error: Uncaught Error: Call to undefined function wp() in /home/u12515p9108/domains/vcwaterland.nl/public_html/wp-blog-header.php:16\nStack trace:\n#0 /home/u12515p9108/domains/vcwaterland.nl/public_html/index.php(17): require()\n#1 {main}\n thrown in /home/u12515p9108/domains/vcwaterland.nl/public_html/wp-blog-header.php on line 16\n
    [Sun Mar 21 16:12:26.718795 2021] [lsapi:error] [pid 970415:tid 140662324143872] [client 92.109.206.88:63288] [host http://www.vcwaterland.nl] Backend fatal error: PHP Fatal error: Uncaught Error: Call to undefined function wp() in /home/u12515p9108/domains/vcwaterland.nl/public_html/wp-blog-header.php:16\nStack trace:\n#0 /home/u12515p9108/domains/vcwaterland.nl/public_html/index.php(17): require()\n#1 {main}\n thrown in /home/u12515p9108/domains/vcwaterland.nl/public_html/wp-blog-header.php on line 16\n
    [Sun Mar 21 16:12:26.934426 2021] [lsapi:error] [pid 970415:tid 140662775207680] [client 92.109.206.88:63288] [host http://www.vcwaterland.nl] Backend fatal error: PHP Fatal error: Uncaught Error: Call to undefined function wp() in /home/u12515p9108/domains/vcwaterland.nl/public_html/wp-blog-header.php:16\nStack trace:\n#0 /home/u12515p9108/domains/vcwaterland.nl/public_html/index.php(17): require()\n#1 {main}\n thrown in /home/u12515p9108/domains/vcwaterland.nl/public_html/wp-blog-header.php on line 16\n
    [Sun Mar 21 16:12:39.243198 2021] [lsapi:error] [pid 973552:tid 140662733248256] [client 92.109.206.88:63288] [host http://www.vcwaterland.nl] Backend fatal error: PHP Fatal error: Uncaught Error: Call to undefined function wp() in /home/u12515p9108/domains/vcwaterland.nl/public_html/wp-blog-header.php:16\nStack trace:\n#0 /home/u12515p9108/domains/vcwaterland.nl/public_html/index.php(17): require()\n#1 {main}\n thrown in /home/u12515p9108/domains/vcwaterland.nl/public_html/wp-blog-header.php on line 16\n
    [Sun Mar 21 16:18:15.487324 2021] [lsapi:error] [pid 1009110:tid 140662366103296] [client 168.91.221.30:36126] [host http://www.vcwaterland.nl] Backend fatal error: PHP Fatal error: Uncaught Error: Call to undefined function wp() in /home/u12515p9108/domains/vcwaterland.nl/public_html/wp-blog-header.php:16\nStack trace:\n#0 /home/u12515p9108/domains/vcwaterland.nl/public_html/index.php(17): require()\n#1 {main}\n thrown in /home/u12515p9108/domains/vcwaterland.nl/public_html/wp-blog-header.php on line 16\n, referer: https://wordpress.org/support/topic/http-500-error-62/?view=all
    [Sun Mar 21 16:22:08.915887 2021] [lsapi:error] [pid 960:tid 140662250714880] [client 92.109.206.88:63597] [host http://www.vcwaterland.nl] Backend fatal error: PHP Fatal error: Uncaught Error: Call to undefined function wp() in /home/u12515p9108/domains/vcwaterland.nl/public_html/wp-blog-header.php:16\nStack trace:\n#0 /home/u12515p9108/domains/vcwaterland.nl/public_html/index.php(17): require()\n#1 {main}\n thrown in /home/u12515p9108/domains/vcwaterland.nl/public_html/wp-blog-header.php on line 16\n
    [Sun Mar 21 16:22:10.553034 2021] [lsapi:error] [pid 2407:tid 140662670309120] [client 92.109.206.88:63597] [host http://www.vcwaterland.nl] Backend fatal error: PHP Fatal error: Uncaught Error: Call to undefined function wp() in /home/u12515p9108/domains/vcwaterland.nl/public_html/wp-blog-header.php:16\nStack trace:\n#0 /home/u12515p9108/domains/vcwaterland.nl/public_html/index.php(17): require()\n#1 {main}\n thrown in /home/u12515p9108/domains/vcwaterland.nl/public_html/wp-blog-header.php on line 16\n
    [Sun Mar 21 16:22:19.021088 2021] [lsapi:error] [pid 1045374:tid 140662649329408] [client 92.109.206.88:63597] [host http://www.vcwaterland.nl] Backend fatal error: PHP Fatal error: Uncaught Error: Call to undefined function wp() in /home/u12515p9108/domains/vcwaterland.nl/public_html/wp-blog-header.php:16\nStack trace:\n#0 /home/u12515p9108/domains/vcwaterland.nl/public_html/index.php(17): require()\n#1 {main}\n thrown in /home/u12515p9108/domains/vcwaterland.nl/public_html/wp-blog-header.php on line 16\n
    [Sun Mar 21 16:22:21.407281 2021] [lsapi:error] [pid 2407:tid 140662271694592] [client 92.109.206.88:63597] [host http://www.vcwaterland.nl] Backend fatal error: PHP Fatal error: Uncaught Error: Call to undefined function wp() in /home/u12515p9108/domains/vcwaterland.nl/public_html/wp-blog-header.php:16\nStack trace:\n#0 /home/u12515p9108/domains/vcwaterland.nl/public_html/index.php(17): require()\n#1 {main}\n thrown in /home/u12515p9108/domains/vcwaterland.nl/public_html/wp-blog-header.php on line 16\n`

    Hope you can help me as i dont understand this log

    • This reply was modified 6 months, 1 week ago by jesse120502.
    Moderator Steve Stern (sterndata)

    (@sterndata)

    Forum Moderator & Support Team Volunteer

    Let’s focus on Uncaught Error: Call to undefined function wp() in /home/u12515p9108/domains/vcwaterland.nl/public_html/wp-blog-header.php:16\nStack trace:\n#

    It seems that one or more core WP files may be missing. Do Step #1 here to replace the core files: https://wordpress.org/support/article/updating-wordpress/#step-1-replace-wordpress-files

    Thread Starter jesse120502

    (@jesse120502)

    I have updated the core files but still get the error.

    This is my error log now:

    [Sun Mar 21 16:42:12.598771 2021] [lsapi:error] [pid 164765:tid 140602586896128] [client 2a06:2ec0:1::100:40826] [host www.vcwaterland.nl] Backend fatal error: PHP Fatal error:  Uncaught Error: Call to undefined function send_origin_headers() in /home/u12515p9108/domains/vcwaterland.nl/public_html/wp-admin/admin-ajax.php:25\nStack trace:\n#0 {main}\n  thrown in /home/u12515p9108/domains/vcwaterland.nl/public_html/wp-admin/admin-ajax.php on line 25\n, referer: https://www.vcwaterland.nl/wp-admin/admin-ajax.php?action=as_async_request_queue_runner&nonce=6d4c99811a
    [Sun Mar 21 16:42:12.798454 2021] [lsapi:error] [pid 164765:tid 140602534446848] [client 2a06:2ec0:1::100:40922] [host www.vcwaterland.nl] Backend fatal error: PHP Fatal error:  Uncaught Error: Call to undefined function send_origin_headers() in /home/u12515p9108/domains/vcwaterland.nl/public_html/wp-admin/admin-ajax.php:25\nStack trace:\n#0 {main}\n  thrown in /home/u12515p9108/domains/vcwaterland.nl/public_html/wp-admin/admin-ajax.php on line 25\n, referer: https://www.vcwaterland.nl/wp-admin/admin-ajax.php?action=as_async_request_queue_runner&nonce=6d4c99811a
    [Sun Mar 21 16:42:13.581006 2021] [lsapi:error] [pid 158338:tid 140602324649728] [client 92.109.206.88:52434] [host www.vcwaterland.nl] Backend fatal error: PHP Fatal error:  Uncaught Error: Call to undefined function send_origin_headers() in /home/u12515p9108/domains/vcwaterland.nl/public_html/wp-admin/admin-ajax.php:25\nStack trace:\n#0 {main}\n  thrown in /home/u12515p9108/domains/vcwaterland.nl/public_html/wp-admin/admin-ajax.php on line 25\n, referer: https://www.vcwaterland.nl/wp-admin/index.php
    [Sun Mar 21 16:42:13.581695 2021] [lsapi:error] [pid 164765:tid 140602481997568] [client 92.109.206.88:52434] [host www.vcwaterland.nl] Backend fatal error: PHP Fatal error:  Uncaught Error: Call to undefined function send_origin_headers() in /home/u12515p9108/domains/vcwaterland.nl/public_html/wp-admin/admin-ajax.php:25\nStack trace:\n#0 {main}\n  thrown in /home/u12515p9108/domains/vcwaterland.nl/public_html/wp-admin/admin-ajax.php on line 25\n, referer: https://www.vcwaterland.nl/wp-admin/index.php
    [Sun Mar 21 16:42:13.659183 2021] [lsapi:error] [pid 162496:tid 140602576406272] [client 92.109.206.88:52434] [host www.vcwaterland.nl] Backend fatal error: PHP Fatal error:  Uncaught Error: Call to undefined function wp() in /home/u12515p9108/domains/vcwaterland.nl/public_html/wp-blog-header.php:16\nStack trace:\n#0 /home/u12515p9108/domains/vcwaterland.nl/public_html/index.php(17): require()\n#1 {main}\n  thrown in /home/u12515p9108/domains/vcwaterland.nl/public_html/wp-blog-header.php on line 16\n, referer: https://www.vcwaterland.nl/wp-admin/index.php
    [Sun Mar 21 16:42:16.145339 2021] [lsapi:error] [pid 162496:tid 140602824271616] [client 92.109.206.88:52434] [host www.vcwaterland.nl] Backend fatal error: PHP Fatal error:  Uncaught Error: Call to undefined function wp() in /home/u12515p9108/domains/vcwaterland.nl/public_html/wp-blog-header.php:16\nStack trace:\n#0 /home/u12515p9108/domains/vcwaterland.nl/public_html/index.php(17): require()\n#1 {main}\n  thrown in /home/u12515p9108/domains/vcwaterland.nl/public_html/wp-blog-header.php on line 16\n
    [Sun Mar 21 16:42:18.794806 2021] [lsapi:error] [pid 166035:tid 140602702284544] [client 92.109.206.88:52434] [host www.vcwaterland.nl] Backend fatal error: PHP Fatal error:  Uncaught Error: Call to undefined function send_origin_headers() in /home/u12515p9108/domains/vcwaterland.nl/public_html/wp-admin/admin-ajax.php:25\nStack trace:\n#0 {main}\n  thrown in /home/u12515p9108/domains/vcwaterland.nl/public_html/wp-admin/admin-ajax.php on line 25\n, referer: https://www.vcwaterland.nl/wp-admin/index.php
    [Sun Mar 21 16:42:18.795040 2021] [lsapi:error] [pid 158338:tid 140602429548288] [client 92.109.206.88:52434] [host www.vcwaterland.nl] Backend fatal error: PHP Fatal error:  Uncaught Error: Call to undefined function send_origin_headers() in /home/u12515p9108/domains/vcwaterland.nl/public_html/wp-admin/admin-ajax.php:25\nStack trace:\n#0 {main}\n  thrown in /home/u12515p9108/domains/vcwaterland.nl/public_html/wp-admin/admin-ajax.php on line 25\n, referer: https://www.vcwaterland.nl/wp-admin/index.php
    [Sun Mar 21 16:42:20.432802 2021] [lsapi:error] [pid 166035:tid 140602597385984] [client 92.109.206.88:52434] [host www.vcwaterland.nl] Backend fatal error: PHP Fatal error:  Uncaught Error: Call to undefined function nocache_headers() in /home/u12515p9108/domains/vcwaterland.nl/public_html/wp-admin/admin.php:36\nStack trace:\n#0 /home/u12515p9108/domains/vcwaterland.nl/public_html/wp-admin/index.php(10): require_once()\n#1 {main}\n  thrown in /home/u12515p9108/domains/vcwaterland.nl/public_html/wp-admin/admin.php on line 36\n, referer: https://www.vcwaterland.nl/wp-admin/index.php
    [Sun Mar 21 16:42:22.924472 2021] [lsapi:error] [pid 166035:tid 140602576406272] [client 92.109.206.88:52434] [host www.vcwaterland.nl] Backend fatal error: PHP Fatal error:  Uncaught Error: Call to undefined function wp() in /home/u12515p9108/domains/vcwaterland.nl/public_html/wp-blog-header.php:16\nStack trace:\n#0 /home/u12515p9108/domains/vcwaterland.nl/public_html/index.php(17): require()\n#1 {main}\n  thrown in /home/u12515p9108/domains/vcwaterland.nl/public_html/wp-blog-header.php on line 16\n
    Moderator Steve Stern (sterndata)

    (@sterndata)

    Forum Moderator & Support Team Volunteer

    send_origin_headers should be in wp-includes/http.php. Is that file there and readable?

    Thread Starter jesse120502

    (@jesse120502)

    This is in the http.php file:

    function send_origin_headers() {
    	$origin = get_http_origin();
    
    	if ( is_allowed_http_origin( $origin ) ) {
    		header( 'Access-Control-Allow-Origin: ' . $origin );
    		header( 'Access-Control-Allow-Credentials: true' );
    		if ( 'OPTIONS' === $_SERVER['REQUEST_METHOD'] ) {
    			exit;
    		}
    		return $origin;
    	}
    
    	if ( 'OPTIONS' === $_SERVER['REQUEST_METHOD'] ) {
    		status_header( 403 );
    		exit;
    	}
    
    	return false;
    }
    Moderator Steve Stern (sterndata)

    (@sterndata)

    Forum Moderator & Support Team Volunteer

    This may be a plugin or theme conflict. Please attempt to disable all plugins, and use one of the default (Twenty*) themes. If the problem goes away, enable them one by one to identify the source of your troubles.

    See http://www.wpbeginner.com/plugins/how-to-deactivate-all-plugins-when-not-able-to-access-wp-admin/

    Thread Starter jesse120502

    (@jesse120502)

    I tried to disable all plugins but i still dont have access to my admin panel.

    If you don’t mind, i can also give you the login details to my ftp server and admin panel. I would be really helpful if you could take a look there if you can fix it 😉

    Moderator Steve Stern (sterndata)

    (@sterndata)

    Forum Moderator & Support Team Volunteer

    Please don’t offer to send or post logon credentials on these forums: https://wordpress.org/support/guidelines#the-bad-stuff

    You may trust me, but it normalizes a dangerous practice. It’s a fine line, but one that we need to enforce. Thanks for your cooperation. Never give anyone access to your site without a signed, enforceable contract. I’m not willing to do that, nor could you afford me. 🙂

    Let’s start again with the reinstall. Delete all “loose” PHP files in the root of your site, except wp-config.php, and remove the directories wp-admin and wp-includes, then do the manual installation again: https://wordpress.org/support/article/updating-wordpress/#step-1-replace-wordpress-files

    Thread Starter jesse120502

    (@jesse120502)

    Okay the site works now! I disabled all plugins and am now enabling them 1 by 1. I get the http 500 error when i activate the classic editor plugin from wordpress.

    Thread Starter jesse120502

    (@jesse120502)

    I just tried it again and I actually get the error when i enable more than 3 plugins.

    Moderator Steve Stern (sterndata)

    (@sterndata)

    Forum Moderator & Support Team Volunteer

    I recommend asking at https://wordpress.org/support/plugin/classic-editor/#new-post so the plugin’s developers and support community can help you with this.

    Thread Starter jesse120502

    (@jesse120502)

    @sterndata i just discoverd classic editor isnt the problem. Everytime i enable more than 2 plugins, i will get the error

    Moderator Steve Stern (sterndata)

    (@sterndata)

    Forum Moderator & Support Team Volunteer

    What’s the error in the debug log?

    Thread Starter jesse120502

    (@jesse120502)

    This is the error log:

    [Sun Mar 21 18:14:03.637950 2021] [lsapi:error] [pid 739930:tid 139748427425536] [client 92.109.206.88:58724] [host www.vcwaterland.nl] Backend fatal error: PHP Fatal error:  Uncaught Error: Call to undefined function nocache_headers() in /home/u12515p9108/domains/vcwaterland.nl/public_html/wp-admin/admin.php:36\nStack trace:\n#0 /home/u12515p9108/domains/vcwaterland.nl/public_html/wp-admin/plugins.php(10): require_once()\n#1 {main}\n  thrown in /home/u12515p9108/domains/vcwaterland.nl/public_html/wp-admin/admin.php on line 36\n, referer: https://www.vcwaterland.nl/wp-admin/users.php
    [Sun Mar 21 18:14:15.772968 2021] [lsapi:error] [pid 739930:tid 139747777054464] [client 92.109.206.88:58724] [host www.vcwaterland.nl] Backend fatal error: PHP Fatal error:  Uncaught Error: Call to undefined function nocache_headers() in /home/u12515p9108/domains/vcwaterland.nl/public_html/wp-admin/admin.php:36\nStack trace:\n#0 /home/u12515p9108/domains/vcwaterland.nl/public_html/wp-admin/plugins.php(10): require_once()\n#1 {main}\n  thrown in /home/u12515p9108/domains/vcwaterland.nl/public_html/wp-admin/admin.php on line 36\n
    [Sun Mar 21 18:14:18.209446 2021] [lsapi:error] [pid 740982:tid 139748007831296] [client 92.109.206.88:58724] [host www.vcwaterland.nl] Backend fatal error: PHP Fatal error:  Uncaught Error: Call to undefined function wp() in /home/u12515p9108/domains/vcwaterland.nl/public_html/wp-blog-header.php:16\nStack trace:\n#0 /home/u12515p9108/domains/vcwaterland.nl/public_html/index.php(17): require()\n#1 {main}\n  thrown in /home/u12515p9108/domains/vcwaterland.nl/public_html/wp-blog-header.php on line 16\n
    [Sun Mar 21 18:14:20.267171 2021] [lsapi:error] [pid 739930:tid 139747944892160] [client 92.109.206.88:58724] [host www.vcwaterland.nl] Backend fatal error: PHP Fatal error:  Uncaught Error: Call to undefined function wp() in /home/u12515p9108/domains/vcwaterland.nl/public_html/wp-blog-header.php:16\nStack trace:\n#0 /home/u12515p9108/domains/vcwaterland.nl/public_html/index.php(17): require()\n#1 {main}\n  thrown in /home/u12515p9108/domains/vcwaterland.nl/public_html/wp-blog-header.php on line 16\n
    [Sun Mar 21 18:20:12.471039 2021] [lsapi:error] [pid 767493:tid 139945219802880] [client 2a06:2ec0:1::100:60632] [host www.vcwaterland.nl] Backend fatal error: PHP Fatal error:  Uncaught Error: Call to undefined function wp_get_ready_cron_jobs() in /home/u12515p9108/domains/vcwaterland.nl/public_html/wp-cron.php:79\nStack trace:\n#0 {main}\n  thrown in /home/u12515p9108/domains/vcwaterland.nl/public_html/wp-cron.php on line 79\n, referer: https://www.vcwaterland.nl/wp-cron.php?doing_wp_cron=1616347212.4086899757385253906250
    [Sun Mar 21 18:20:12.697234 2021] [lsapi:error] [pid 769953:tid 139945356171008] [client 2a06:2ec0:1::100:60648] [host www.vcwaterland.nl] Backend fatal error: PHP Fatal error:  Uncaught Error: Call to undefined function send_origin_headers() in /home/u12515p9108/domains/vcwaterland.nl/public_html/wp-admin/admin-ajax.php:25\nStack trace:\n#0 {main}\n  thrown in /home/u12515p9108/domains/vcwaterland.nl/public_html/wp-admin/admin-ajax.php on line 25\n, referer: https://www.vcwaterland.nl/wp-admin/admin-ajax.php?action=as_async_request_queue_runner&nonce=6d4c99811a
    [Sun Mar 21 18:20:15.305980 2021] [lsapi:error] [pid 758924:tid 139944804509440] [client 92.109.206.88:61097] [host www.vcwaterland.nl] Backend fatal error: PHP Fatal error:  Uncaught Error: Call to undefined function nocache_headers() in /home/u12515p9108/domains/vcwaterland.nl/public_html/wp-admin/admin.php:36\nStack trace:\n#0 /home/u12515p9108/domains/vcwaterland.nl/public_html/wp-admin/plugins.php(10): require_once()\n#1 {main}\n  thrown in /home/u12515p9108/domains/vcwaterland.nl/public_html/wp-admin/admin.php on line 36\n, referer: https://www.vcwaterland.nl/wp-admin/plugins.php?plugin_status=all&paged=1&s
    [Sun Mar 21 18:21:52.794010 2021] [autoindex:error] [pid 790828:tid 139945639397120] [client 168.91.221.30:33326] AH01276: Cannot serve directory /home/u12515p9108/domains/vcwaterland.nl/public_html/: No matching DirectoryIndex (index.php,index.html,index.htm,index.shtml,index.php5,index.php4,index.php3,index.phtml,index.cgi,index.pl) found, and server-generated directory index forbidden by Options directive, referer: https://wordpress.org/support/topic/http-500-error-62/?view=all
    [Sun Mar 21 18:22:06.767131 2021] [autoindex:error] [pid 790828:tid 139945209313024] [client 168.91.221.30:33326] AH01276: Cannot serve directory /home/u12515p9108/domains/vcwaterland.nl/public_html/: No matching DirectoryIndex (index.php,index.html,index.htm,index.shtml,index.php5,index.php4,index.php3,index.phtml,index.cgi,index.pl) found, and server-generated directory index forbidden by Options directive, referer: https://wordpress.org/support/topic/http-500-error-62/?view=all
    [Sun Mar 21 18:28:41.027633 2021] [lsapi:error] [pid 819385:tid 139945450579712] [client 92.109.206.88:65388] [host www.vcwaterland.nl] Backend fatal error: PHP Fatal error:  Uncaught Error: Call to undefined function nocache_headers() in /home/u12515p9108/domains/vcwaterland.nl/public_html/wp-admin/admin.php:36\nStack trace:\n#0 /home/u12515p9108/domains/vcwaterland.nl/public_html/wp-admin/edit.php(10): require_once()\n#1 {main}\n  thrown in /home/u12515p9108/domains/vcwaterland.nl/public_html/wp-admin/admin.php on line 36\n, referer: https://www.vcwaterland.nl/wp-admin/plugins.php?plugin_status=all&paged=1&s
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