Common WordPress Errors and How to Debug it

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Common Wordpress Errors And How To Debug It


In this blog post, we’ll dive into the most common WordPress errors that can make your heart skip a beat and how to troubleshoot them like a pro. Let’s unravel the mysteries behind these pesky bugs together!

Important! Before beginning any updates or changes to your website, Do a backup first! 

The Importance of Understanding WordPress Errors

WordPress errors can range from minor glitches to more serious issues that require immediate attention. Being able to diagnose these problems will save you time and frustration in the long run. Instead of feeling overwhelmed when something goes wrong, having a basic knowledge of WordPress errors empowers you to take control of the situation.

Moreover, knowing how to debug WordPress errors can prevent potential security vulnerabilities or data loss on your website. It’s like being equipped with a digital first aid kit – ready to tackle any unexpected challenges that may arise in the world of web development.

Error Establishing a Database Connection

Wordpress Common Error : Error Establishing a Database Connection

Have you ever encountered a frustrating database connection error while working on your WordPress site? It’s a common issue that can leave you scratching your head. When this error occurs, it means that WordPress is unable to establish a connection with the database where all your site’s information is stored.

Incorrect Database Credentials

One possible reason for this error could be incorrect database credentials in your wp-config.php file. Double-check the database name, username, password, and host to ensure they are entered correctly. Another culprit could be a corrupted database or server issues causing connectivity problems.

Surpassing the server’s storage capacity

In certain instances, a database connection error can arise due to surpassing the server’s storage capacity. When your server’s storage space is fully utilized, files cannot be written to the database when you or your users access the website, resulting in the display of the same error message. Access your server or hosting account and review the storage limitations. Contact your hosting provider for assistance in examining this issue.

Corrupt Files in Your WordPress Installation

Corrupted files in your WordPress installation can potentially lead to an “Error Establishing a Database Connection.” While this error message is commonly associated with database-related issues, such as incorrect database credentials or server/database downtime, corrupted WordPress core files or essential plugins/themes can also trigger this error.

You can do a simple troubleshooting and observe which files cause the error. You can:

  1. Activate the WordPress Default theme (Twenty-tweny-four) and Check if the error still occurs
  2. Deactivate all the plugin and activate it one by one
  3. If the error still occurs, go to your browser, right Click and select inspect element. Check under the “Console” and read the error message. 

White Screen of Death

Wordpress Common Error : WordPress White Screen of Death

The White Screen of Death on WordPress is an issue where when you try to access your WordPress website, all you see is a blank white screen, without any error messages or other content displayed. This can make it challenging to identify the specific cause of the problem.

When an error is detected within one of the plugins or themes, WordPress will display a white screen instead of revealing the error file or code, as doing so could expose the file directory and crucial configuration details. This measure helps prevent potential attackers from exploiting the configuration details to hack into your website.

Debugging the White Screen of Death can be frustrating, but there are steps you can take to troubleshoot it. Start by checking if you can access the backend of the website (e.g. and  for any recent changes or updates that may have triggered the error. Deactivating plugins one by one or switching to a default theme can help pinpoint the culprit.

To know more about the cause of the error, see below – Debugging with WP_DEBUG. 

Internal Server Error

Wordpress Common Error : Internal Server Error

An Internal Server Error is a generic error message that indicates something has gone wrong on the web server, preventing it from fulfilling the request. It typically does not provide specific details about the exact cause of the issue, making it necessary to investigate further to identify and resolve the underlying problem.

Start troubleshooting it by checking your .htaccess file in your cpanel or hosting server for any misconfigurations or corrupt plugins causing conflicts. If you are confused, you can download the file as a backup and replace the .htaccess file with the default value.

Another common culprit behind Internal Server Errors is insufficient memory limit settings in your PHP configuration. You might need to increase the memory limit to give your website more breathing room to function properly. You can ask your hosting support for help.

Memory Exhausted Error

Wordpress Common Error : Memory Exhausted Error

A Memory Exhausted Error occurs when a script or application tries to allocate more memory than is available or allowed. This can happen when a process consumes all the allocated memory limit, causing the server to run out of available memory resources. In the context of web development, this error often occurs in PHP scripts or WordPress sites due to excessive memory usage by plugins or themes.

When faced with this issue, it’s essential to identify the root cause. One common reason for this error is poorly optimized plugins or themes that consume excessive memory resources. Another possible cause could be a lack of memory allocation in your hosting server settings.

To troubleshoot this error, start by deactivating any recently installed plugins or themes that might be causing the spike in memory usage. You can also increase PHP memory limit by editing the wp-config.php file or contacting your hosting provider for assistance.

Remember, addressing the Memory Exhausted Error promptly will help maintain optimal performance and user experience on your WordPress site.

Fatal Error: Maximum Execution Time Exceeded

Wordpress Common Error : Maximum Execution Time Exceeded

Encountering a “Fatal Error: Maximum Execution Time Exceeded” message on your WordPress site can be frustrating. This error usually occurs when a script takes longer to run than the maximum time allowed by the server. When this happens, your site may become unresponsive, leaving visitors in limbo.

To address this issue, you can increase the maximum execution time in your php.ini file or .htaccess file. By adjusting this setting, you give scripts more time to complete their tasks without triggering an error. Alternatively, optimizing your website’s performance by reducing unnecessary plugins or bulky themes can help prevent this error from reoccurring.

Plugin and Theme Conflicts

One of the most frustrating WordPress errors that users encounter is plugin and theme conflicts. These conflicts can cause your site to malfunction, display errors, or even crash completely.

When you experience strange behavior on your website after installing a new plugin or theme, it’s likely due to a conflict between the existing components. This clash can lead to issues such as broken layouts, missing features, or functionality errors.

To identify the culprit causing the conflict, start by deactivating all plugins and switching to a default theme. Then gradually reactivate each plugin and switch back to your original theme one at a time while checking for any abnormalities in between.

By systematically pinpointing which combination triggers the problem, you can resolve the conflict swiftly and ensure smooth operation of your WordPress site.

Debugging with WP_DEBUG

Debugging with WP_DEBUG is a powerful tool for developers to identify and fix issues in their WordPress websites. By enabling WP_DEBUG in the wp-config.php file, you can set your site to display error messages that can help pinpoint the root cause of any problems.

Once you’ve enabled debugging, WordPress will start logging PHP errors, warnings, and notices to the debug.log file. You can then find this file in the wp-content directory of your WordPress installation.

Remember to turn off debugging (define( ‘WP_DEBUG’, false );) once you’ve finished troubleshooting, as leaving it on in a production environment can potentially expose sensitive information and impact performance.


As a WordPress developer or enthusiast, understanding common errors and how to debug them is crucial for maintaining a smooth-running website. By recognizing the signs of issues like database connection errors, white screen of death, internal server errors, and more, you can efficiently troubleshoot and resolve them.

Remember that plugin and theme conflicts are also common culprits in causing WordPress errors. By isolating these potential issues through deactivating plugins or switching themes temporarily, you can pinpoint the source of the problem.

Utilizing tools like WP_DEBUG allows you to delve deeper into error messages and logs to identify root causes more effectively. This debugging feature provides valuable insights into what might be going wrong behind the scenes on your WordPress site.

By staying proactive in addressing WordPress errors promptly, you can ensure a seamless user experience for your visitors while maintaining the integrity of your website’s functionality. Keep learning about common pitfalls in web development to enhance your troubleshooting skills further and elevate your WordPress expertise.

At Lemonade, we guarantee the proper maintenance of our clients’ digital presence. We offer professional debugging services at no additional cost for the initial 12 months following the launch of our clients’ websites. Speak to our team today to learn more about our web design services

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