Written by Admin on 2025-05-06

Understanding the Causes and Solutions of "Call to a Member Function fetch_row on Null" Error in WordPress

WordPress is a popular content management system (CMS) for building websites, blogs, and online stores. However, like any software, it can encounter errors that can be frustrating to deal with. One of the common errors in WordPress is "Call to a member function fetch_row on null". This article will help you understand the causes of this error and provide solutions on how to fix it.

What Does "Call to a Member Function fetch_row on Null" Mean?

"Call to a member function fetchrow on null" is an error message that occurs when a PHP script attempts to call a method "fetchrow" on a null object reference. This error usually occurs when a variable is not defined or when a database function is called before the connection is established.

Causes of "Call to a Member Function fetch_row on Null" Error in WordPress

There are several reasons why "Call to a member function fetch_row on null" can occur in WordPress. The following are some of the most common causes of this error:

• Database Connection Issue - This error can appear when the database connection is lost, or the database credentials are incorrect.

• Syntax Error - A syntax error in the code can cause the error when the code tries to execute a function that was not defined.

• Plugin or Theme Conflict - Sometimes, a plugin or theme can cause this error. If you recently installed or updated a plugin or theme, it may be causing the issue.

How to Fix "Call to a Member Function fetch_row on Null"

Now that you know the causes of the error, let's discuss how to fix it. The following are some of the solutions you can try:

• Check Database Connection - Check your database credentials to ensure they are correct. Also, try to restart your database server to ensure that the connection is established.

• Check for Syntax Errors - If you recently made changes to your code, check for any syntax errors. You can use a code editor with syntax highlighting to help you catch any syntax errors.

• Disable Plugins or Themes - If you recently installed or updated a plugin or theme, disable it to see if it resolves the issue. If disabling it fixes the issue, you may want to contact the plugin or theme developer to report the conflict.

Conclusion

"Call to a member function fetch_row on null" is a common error in WordPress that can be resolved by checking your database connection, reviewing your code for syntax errors, or disabling any recently installed plugins or themes. By following the solutions listed above, you should be able to fix the issue and get back to creating a great WordPress site.