WordPress critical errors can happen for various reasons, and pinpointing the exact cause can sometimes be challenging. However, some of the most common causes of critical errors in WordPress include the following:
Plugin or theme incompatibility: WordPress plugins and themes are developed by third-party developers. Sometimes, they can conflict with each other, leading to critical errors.
Server-related issues: WordPress requires a server to run, and if there are any issues with the server, such as misconfiguration or lack of resources, it can cause critical errors.
Corrupted WordPress files: If the core files of WordPress get corrupted, it can cause critical errors. It can happen due to file permissions or an issue with the WordPress installation process.
Memory issues: WordPress is a resource-intensive application and requires sufficient memory to run smoothly. If there isn’t enough memory available, it can cause critical errors.
Hacked website: A hacked website can also cause critical errors, as hackers may have inserted malicious code that interferes with the website’s functioning.
To fix a critical error in WordPress, you must first identify the root cause. That can involve checking for compatibility issues with plugins and themes, ensuring the server is configured correctly, checking for corrupted WordPress files, and performing a malware scan to check for hacking attempts. Once you have identified the cause, you can take the necessary steps to fix the error.
Most of the time, a critical error wouldn’t just happen by itself. Something must have changed such that a WordPress site could not be run properly. Sometimes, the reason could be less severe than those mentioned above.
For example, suppose you just did a website migration. In that case, an upgraded PHP version could be the culprit of a malfunctioned WordPress site. Don’t panic. Downgrade your PHP version and try to open the site again. If the critical error was gone, that meant something had to do with an outdated WordPress plugin. Deactivate some of the old plugins, upgrade your PHP to a newer version, and try to rerun the site. If deactivating old plugins does not help, switch to another WordPress theme. Maybe your old theme is outdated and does not work with your current PHP version. So, before you purchase a theme from a theme portal, you better check that theme’s release or update date. Otherwise, you will buy something that won’t work with your current system configuration.
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