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WordPress fatal error uncaught mysqli_sql_exception

If you have been running into trouble with the following error message, our experts have your back.

WordPress Fatal Error: Uncaught mysqli_sql_exception

This error lets us know that there was an unhandled exception related to a MySQL database operation within our WordPress website.

Interestingly, this error usually occurs if there is a problem executing a MySQL query with the MySQL extension in PHP, and the exception is not caught and handled properly in the code.

Let’s take a look at some of the common reasons behind this error:

• The error may occur due to a problem connecting to our MySQL database server. This may be due to incorrect database credentials, an unavailable database server, or incorrect database hostname, etc.
• In case our code has an incorrect or improperly formatted SQL query, it triggers an exception when executed.
• If our code needs certain data from the database but does not receive it, it will result in an uncaught exception.
• Furthermore, if we are performing an operation that violates database constraints it causes an uncaught exception.

Troubleshooting Tips

1. First, we have to make sure that our WordPress configuration files have the correct database credentials.
2. Next, make sure that our MySQL database server is up and running and accessible from our web server.
3. If the error still occurs, we have to check custom code, plugins, or themes that execute database queries. We have to verify that our SQL queries are correctly formatted and accurate.
4. Next, we can try wrapping our database operations within try-catch blocks to catch and handle exceptions. This way, our website won’t crash, and we can provide error messages or responses to users.
5. Additionally, we can implement error logging to record any exceptions or errors that occur on our website. This will help us diagnose and fix issues more effectively.
6. If the error still exists, we have to deactivate the plugins or themes one by one to identify the culprit. We have to update or replace any problematic plugins or themes.
7. Finally, we have to make sure we are using an up-to-date version of WordPress.

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Conclusion

Today, our Support Techs demonstrate how to troubleshoot WordPress fatal error uncaught mysqli_sql_exception.