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Common WordPress Errors and Access Logs

HTTP response codes are returned past the server to betoken how a request was received. The start digit of the error lawmaking indicates the class of the mistake. For instance; a 2xx response is a success response, a 3xx response is a redirect response, a 4xx indicates client error, and a 5xx request indicates a server error. Correctly identifying the response lawmaking an asset is returning may be crucial to a swift and easy resolve.

Access Logs

Locating your site'due south admission logs can be helpful for diagnosing errors or traffic bug. Inside the logs yous can locate the specific asking and the response or error code returned by the server. A search can be run for a timestamp, a URL or an IP address, or the logs tin can exist filtered by type. Finally, logs can exist downloaded as a CSV for employ in external tools.

A website's access logs tin can exist institute in two locations:

Login to the User Portal
Click Sites
Select the environs name
Click Access Logs

Filters

Severity:
- Demand Attention: Items will qualify every bit Need attention if their status is 301, 401 and/or if.
Log Blazon: It will either prove NGINX or PHP.
- NGINX
- PHP
Status: If there is a problem it will show whatsoever of the below status codes.
- 400
- 401
- 403
- 404
Time: This is how far back you can filter the logs to show:
- Last 5 minutes
- Final 30 minutes
- Last four hours
- Concluding two days
- Last thirty days
- All time

Log Details

Sitename: The selected environment (PROD/STAGING/DEV)
Site URL: Site url (The selected domain)
Log type: Is it an NGINX or PHP mistake?
Severity: Does this need attention? For example, Needs attention
Domain: Domain proper noun
Time: The time it was logged
Verb: Blazon of asking (GET)
Resource: Where it occurred
Protocol: HTTP/1/1
Status: The condition code value
Size: The size of the file
Referrer: The referrer value
User Agent: The user amanuensis value

Raw admission logs logs files tin can besides exist located in the WordPress admin dashboard.

Log in to your WordPress dashboard (wp-admin)
Click on the WP Engine tab in the principal menu to access our plugin
Select Information
Scroll downward to the Access and Fault log section
Click the link to download the desired access log

403 — Forbidden

The gist of the mistake is simple – accessing the file or location (or the site itself) is forbidden by a directive on the site. There are a few ways the request may be getting blocked:

File Permissions
- The page you are attempting to access may have the wrong permissions. Reset default permissions with this guide.
File Type
- Certain files our server volition not allow to be loaded in your browser, such as the .htaccess and wp-config.php files.
- Other files that cannot be opened in your browser include files located in a directory that does not include an alphabetize.php file which allows those files to exist viewed.
Security Plugin
- Are yous using a security plugin on your site? Disable plugins from the database without accessing the wp-admin dashboard.
.htaccess
- Bank check your site's .htaccess for rules preventing access to the site, specifically any ALLOW or DENY rules.
- Upload a default .htaccess file.
Security Plugins
- Are you using a third-political party firewall like Sucuri or Cloudflare?
- Temporarily disabling the firewall can confirm if information technology is causing the error.
- Bank check your firewall settings and purge any firewall cache.
WP Engine Security
- It's possible the WP Engine firewall has blocked your IP, or any rules added to the firewall past request may be inadvertently blocking your activity.
- Try loading the site on another network, such equally your mobile device disconnected from WiFi. If the site loads without a 403, contact WP Engine Support with your IP address.

Check out our total 403 and permissions guide here.

404 — Not Found

This error means the asset cannot exist found. The first step to properly assess a 404 mistake is to determine which kind yous are receiving: WordPress 404 or Nginx 404.

WordPress 404 Error

Notice that the WordPress theme is even so loading. This error usually shows when a page that can't be constitute in the database is requested. Resolving this error is likely going to take place inside WordPress.

If WordPress is throwing the 404 error:

Verify the page/post/WordPress element actually exists by locating it in your WordPress admin dashboard or the database
Verify the folio/post/WordPress element is set as public, published or otherwise in a visible state
Reset permalinks
Reset the .htaccess to default

Subsites in a new Multisite network:

Occasionally you lot may encounter an result with subdirectory multisite installations where subsites will receive 404 errors on avails that should exist in the site's files.
For example, you might meet 404s on assets like domain.com/subsite/wp-content/uploads/2019/x/image.jpg
Your multisite may non accept been created properly, reach out to Support for assist.

Nginx 404 Mistake

Detect this version shows the default Nginx 404 response page instead. This is the folio that shows upward when a static file which doesn't exist is requested.

Nginx serves static assets, which is why a Nginx 404 specifically means an issue with reading or locating the file at the path in your browser.

If Nginx is throwing the 404 error:

Search the site'south media directories for the file in question.
- If the file exists, information technology must be:
  - Located in the directory path matching the URL in your browser
  - Spelled the aforementioned in the browser and on the server
  - Using the same majuscule and lowercase characters, as static file names are case-sensitive
- If the file doesn't be:
  - The file needs to be uploaded or relocated to the correct directory

NOTE: If you want to redirect all extraneous 404s to a custom fault folio, review our guide here.

405 — Method Not Allowed

Unlike a 404 mistake where the file isn't constitute, a 405 fault says the file is there just the method of asking isn't allowed. This error most unremarkably returned when your lawmaking is interacting incorrectly with WordPress functionality.

As this is most likely an event with WordPress code (such every bit a plugin or theme), follow along with our general troubleshooting guide.

429 — Too Many Requests

If you lot receive a 429 fault it may be concerning, but this is actually a sign that our security arrangement is working. This error ways you've exceeded the maximum number of requests to a page within the final second.

If you receive this fault in your browser when working, reach out to our Back up team to investigate and remove the block if necessary.

Cases where the error is recurring will most probable exist due to an automatic process, and then add a "sleep" or space out crons to resolve.

NOTE: To protect the integrity of our security system, nosotros cannot share the exact limit of requests per second that will generate this error.

444 — Connection Closed Without A Response

A 444 is like to a 403, in that the request could exist blocked by our server configuration. This differs from a 403 in that NGINX closes the connection without actually returning a FORBIDDEN response. In the browser this will typically display a 502, but in WP Engine access logs it will evidence a 444. The main stardom other than what is displayed to the visitor is that 444 condition codes are excluded from WP Engine'south Billing calculations.

A 444 often means that your site has an Nginx rule in place to block traffic and that it is working.

If yous're specifically receiving a 444 on a login folio, this is likely due to a conflict with WP Engine'due south login protection security characteristic. In the browser you may run into a 502 on the login page, however the logs will evidence the 444 error.

The solution is to modify the custom login page code to generate the login URL the same way that WordPress does. Hither'south what WordPress uses in the wp-login.php file:

          <form proper name="loginform" id="loginform" action="<?php echo esc_url( site_url( 'wp-login.php', 'login_post' ) ); ?>" method="post">

The about of import part of the lawmaking from wp-login.php file is this portion:

          site_url( 'wp-login.php', 'login_post' )

Alternatively, when viewing the login page environment.wpengine.com/wp-login.php, we wait the loginform action url to have a parameter wpe-login.

This parameter is added to this url via our mu-plugin. A filter is added, wpe_filter_site_url, which volition add together the wpe-login parameter to the URL string.

500 — Internal Server Error

A 500 fault occurs when PHP cannot render properly. These errors are primarily acquired by three dissimilar issues:

PHP Fatal or PHP Syntax Error

- Review your Apache Fault logs and look for timestamps around the time the mistake occurred for PHP fatal, syntax or parse.
- The error volition indicate to a file and a line number that should be reviewed by a developer.
- If yous're unable to resolve the issue, disabling the offending plugin or theme may resolve the error too.

PHP Parse error: syntax fault, unexpected T_STRING in /nas/wp/www/cluster-1234/somewebsite/wp-content/themes/rainbows/functions.php on line four

In this error we can see there is a PHP parse error in the rainbows theme within the functions.php file on line 4. Reviewing this file and line will be your next stride.

Issues with .htaccess

It'southward possible for the .htaccess to become corrupted over time. Nosotros always recommend using a default .htaccess, and never customizing it.
Follow our guide to replace your .htaccess with a default version.

Segmentation Fault

Segmentation faults tin can be tricky to diagnose. The crusade of this mistake is a process trying to steal memory allocated to a different process, essentially bad or poorly implemented code.
If you would similar to ostend if the fault is a seg fault, you can attain out to our Back up team to check the logs.
To resolve the issue, disable plugins and change the theme 1 at a fourth dimension.

502 — Bad Gateway

A 502 error refers to a cleaved connection (or "gateway") between 2 servers. At WP Engine, this usually refers to the connexion of NGINX and Apache. This is most normally caused by only two things:

The request was killed by the Apache long process killer.
Apache is not at that place to return a response to NGINX.
- This tin be bad code that Apache failed to process, or an issue with the server itself.

Review our guide to diagnose and troubleshoot a 502 Bad Gateway.

503 — Service Unavailable

Different virtually other errors, a 503 is unfortunately much more vague. Typically, this is acquired past faulty code but it may too exist caused by an overloaded server. In many cases it may simply resolve itself after a brief menstruation of time.

Check your DNS
- A 503 error is not common on WP Engine, and then we highly propose verifying that your DNS is pointed to united states of america properly. A 503 may indicate maintenance on other hosts.
- The 503 may be coming from an intermediate service likewise, such as a DNS-level firewall. Try temporarily disabling whatever third-party firewalls.
Disable PHP scripts
- Follow along with our guide to disable all plugins and alter your theme.
If the event is yet non resolved, reach out to our back up team for additional assistance.

504 — Gateway Timeout

A 504 error on WP Engine occurs for a very specific reason and due to this will but bear on uncached requests. We use a complex queueing system to help ensure each site can serve the maximum number of requests speedily and every bit adequately as possible. A 504 occurs when this queueing system, and its backlog are both full.

This error helps identify one of the many things that makes WP Engine special. We do non charge you lot based on PHP workers or limit your available processing resources simply because of what you lot tin pay. Each website on a shared server has the aforementioned counterbalanced access to a servers resources. Other hosts volition try to sell you PHP workers to get more than money from you lot, but we believe even the everyman priced hosting package deserves enterprise-course operation.

At that place are systems in identify to forbid 504s from occurring, merely if y'all do see these errors it may be best to reach out to our Support directly for aid resolving it.

If your site is not the culprit, we volition follow up with the offender to resolve the issue. (Keep your Technical Contact upward to appointment!)

If your site is the culprit, we'll piece of work with you lot to place the cause of the traffic and advise some possible solutions based on the cause:

Likewise many uncached requests to the server
- Support can review any cache-exclusions added to your site for issues. Some custom cache exclusions may need to be removed.
- Excess admin-ajax calls are a common culprit and tin can be identified in your access logs.
- Update or replace offending plugins/themes. In some cases, you may need to attain out to the Author of the asset.
- Piece of work with a developer to perform the same functions using cached methods.
Long running uncached requests
- Check your error logs for 502 errors, as these can identify killed processes and would indicate at that place are processes running too long and becoming backed up, which in turn overburdens the asking queue.
- Update or replace offending plugins/themes. In some cases, you may need to attain out to the Author of the asset.
- Optimize your database to assist calls complete faster.
- Work with a developer to offload, optimize or break down the functionality and then it completes more chop-chop.
Upgrade
- If you've simply outgrown a shared surround and/or your traffic in the previous two ways cannot be improved, information technology may exist fourth dimension to upgrade to a dedicated hosting environs. A dedicated hosting environs means that but your websites have admission to a servers resources
- If you are already on a defended environment, it may exist time to move to a larger server. A larger server will offer more resource for additional growth and the traffic increases that brings.
- If you're experiencing increased traffic and 504s from a sale or seasonality, a temporary upgrade can be considered as well. We practice not require annual purchases for dedicated servers.

For more information see our guide on diagnosing and resolving 504 errors.

520-530 — Cloudflare Mistake Codes

If y'all're using Cloudflare, it's possible for their servers to create or intercept errors. This can dilute or otherwise confuse the significant and make an issue more difficult to resolve.

All HTTP statuses between 520 and 530 are Cloudflare-specific codes with unique meanings.

NOTE: If y'all are troubleshooting GES, refer to this guide instead.

520 – A Catch-All "something went wrong"

Request included more than 14KB of headers
Request didn't include any headers at all
Empty response (444) from the origin server
Connection was reset after validating TCP handshake

521 – Blocked by Firewall

This should never happen on WP Engine servers because we read the Ten-Forwarded-For headers for all Cloudflare IP addresses.
521 means the request was blocked by some other firewall that wasn't WP Engine.

522 – Cloudflare IP Rate Limited

At that place has been some kind of a connection reset after the initial TCP handshake, or that the Cloudflare IP has been charge per unit limited.
Nosotros do not rate limit Cloudflare IPs, this error should non present itself due to WP Engine servers.

523 – Null-Routed Origin IP

This fault just shows if the network path to the origin server is unavailable. This could happen if the origin servers IP is nix-routed.

524 – Timeout Between Cloudflare and Origin

The most common error status from Cloudflare, as this is their long-process timeout.
Cloudflare volition wait 100 seconds for a response from the origin server before invoking the timeout. WP Engine has a sixty second timeout on our ain servers, so Cloudflare timeout isn't a common scenario.
This could be encountered on long requests like CSV imports, long running cron jobs, etc as these are subject to longer timeouts.

526 specifically means the origin server (WP Engine) does non have a valid document. 525 generally ways a more than complex issue, like a cipher mismatch or lack of SNI.
This should non exist an issue on WP Engine due to the nature of our encryption.

527 – Railgun-specific error

This error indicates a communication error or timeout fault betwixt the sender and listener services powering Railgun.
WP Engine does not back up Railgun.

Mix of 52x errors

If you meet 522/524/521 errors all mixed together, this typically indicates something is wrong at the origin. If there is actually an outcome with a Cloudflare edge node, the error message will indicate an issue with Cloudflare rather than the origin server.

"Are you sure y'all want to do this? Please try over again."

Well-nigh ordinarily this mistake comes from a plugin or theme issue. To diagnose this you will need to re-create to a Staging/Development site and disable plugins and themes i by one.

If y'all cannot admission your site, learn how to disable plugins from the database.

Mistake establishing database connexion

For WordPress to successfully connect to a database, the post-obit information is needed:

Database Proper name
Database Username
Database Password
Database Server

This information is saved in the wp-config.php file of a WordPress site. If whatsoever information is incorrect or unreadable yous will receive an error. This information is generated by WP Engine to keep information technology secure, then information technology cannot exist successfully changed otherwise.

To correct this issue y'all will need a functioning wp-config.php file with the correct database information. The easiest way to locate this is to refer to a backup.

Revert to a previous checkpoint, or download a checkpoint and restore the wp-config.php manually over SFTP.

If you continue to take bug, reach out to WP Engine Support to generate and sync new database credentials.

Allowed retentiveness size of xxx bytes exhausted

This Fatal PHP fault indicates that your website needs more memory allocated to WordPress.

Larn how to increase your WordPress retentiveness here.

The maximum value WordPress memory can be set to is 512M. If you've increased memory to this point and notwithstanding receive the error, endeavour copying to a Staging/Development environment and disabling plugins and themes one at a fourth dimension.

"Upload: Failed to write file to deejay"

There are several variations to this error bulletin; "WordPress failed to write to disk", "WordPress has failed to upload due to an mistake failed to write file to disk", and "Unable to create directory wp-content/uploads/… Is its parent directory writable past the server?".

Each of these messages indicates that the file permissions are not correct and every bit such the file wasn't uploaded correctly.

Learn how to reset file permissions here.

If you've reset file permissions and are notwithstanding having issues, confirm that the directory you're attempting to upload to exists and is attainable using SFTP. Try changing to a different accessible directory.

XML Parsing Errors

These errors you will typically come across when working with RSS feeds; "XML Parsing Fault: XML or text declaration not at start of entity" or "Alert: Cannot modify header information – headers already sent by …".

As this is a parse error, the issue will very likely be within some PHP code. Did you alter a theme file recently? An actress space at the end of a file or a tag not being airtight are enough to cause this error.

If you're not certain which files were modified recently in order to revert those manually, try restoring the website to a previous version.

Depending on your RSS feed plugin, you may besides check within the plugin settings for a "Set up RSS Feed" option.

WordPress Error Notification Emails

As of WordPress version five.2, you may be notified via email when WordPress detects an error on the website that causes it not to load. A legitimate WordPress automatic electronic mail volition come up from [email protected]yourdomain.com

A unique error message volition be displayed in the "Error details" section of this email. The guides provided in this article can be used to further shed light on whatsoever problems WordPress has detected.

Howdy! Since WordPress 5.two there is a built-in feature that detects when a plugin or theme causes a fatal error on your site, and notifies you lot with this automated e-mail. In this case, WordPress defenseless an mistake with one of your plugins, [plugin name(s) hither]. First, visit your website (http://yourenvironment.wpengine.com/) and bank check for whatsoever visible issues. Next, visit the page where the fault was caught (http://yourenvironment.wpengine.com/wp-admin/plugins.php?activate=true&plugin_status=all&paged=ane&s=) and bank check for any visible issues. Delight contact your host for aid with investigating this issue further. If your site appears broken and you can't access your dashboard normally, WordPress now has a special "recovery style". This lets you safely login to your dashboard and investigate further. https://yourenvironment.wpengine.com/wp-login.php?action=enter_recovery_mode&rm_token=[some-unique-token] To keep your site safe, this link will expire in 1 day. Don't worry about that, though: a new link will be emailed to you if the mistake occurs again afterward information technology expires. When seeking assistance with this consequence, you may be asked for some of the post-obit data: WordPress version (number) Current theme: Theme name (version number) Current plugin: Plugin name (version number) PHP version (number) Error Details ============= An fault of type E_COMPILE_ERROR was acquired in line 108 of the file /nas/content/live/environmentname/wp-content/plugins/some-plugin/plugin-file.php. Error message: require(): Failed opening required '/nas/content/live/environmentname/wp-content/plugins/some-plugin/includes/modules/loader.php' (include_path='.:/usr/share/pear/php:/usr/share/php')

For more data on this feature, see the WordPress Codex.

Requires the ionCube PHP Loader

Errors related to ionCube may state either PHP Fatal mistake: [ionCube Loader] or Requires the ionCube PHP Loader. These errors refer to the ionCube Loader module, which is disabled for performance reasons across WP Engine.

Updating the plugin or theme may resolve the upshot, otherwise an alternative will need to be found.

For more information on disabled modules, meet our Platform Settings guide.

Side by side Pace: Learn about the Apache error log

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Source: https://wpengine.com/support/error/