HTTP 500 Internal Server Error is a common error in WordPress that can be caused by a variety of issues. Here are some steps you can take to fix this error:

Check your WordPress website’s error logs:

The first thing you should do is check the error logs of your website. This can help you identify the root cause of the error. You can access the error logs from your hosting account, or through an FTP client like FileZilla.

Deactivate all plugins:

If the error is caused by a plugin, you can deactivate all plugins to identify which one is causing the issue. You can do this by accessing your website through an FTP client or your hosting control panel, and renaming the “plugins” folder to something else.

Switch to a default theme:

If the error is caused by a theme, you can switch to a default theme to identify which one is causing the issue. You can do this by accessing your website through an FTP client or your hosting control panel, and renaming the theme’s folder to something else.

Increase PHP memory limit:

Sometimes, the error may be caused by a lack of memory. You can increase the PHP memory limit by adding the following code to your website’s wp-config.php file: define(‘WP_MEMORY_LIMIT’, ‘256M’);

Reinstall WordPress:

If none of the above steps work, you can try reinstalling WordPress. Before you do this, make sure to backup your website and database.

If you’re still unable to resolve the error, you may need to contact your hosting provider for assistance.