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How to Fix the “Headers Already Sent” Error in PHP

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 The “Cannot modify header information – headers already sent” error is a common PHP issue that can also appear in WordPress development. It usually occurs when PHP tries to send or modify HTTP headers after some output has already been sent to the browser. For example, functions such as header() , session_start() , and setcookie() need to run before PHP outputs anything. Why Does This Error Happen? A typical mistake looks like this: echo "Welcome"; header("Location: dashboard.php"); Once echo sends output, PHP can no longer modify the HTTP headers. The correct approach is to handle the header first: header("Location: dashboard.php"); exit; But visible output isn't the only cause. Common Reasons for This Error echo , print , or debugging functions running before header() HTML appearing before PHP sends headers Extra spaces or blank lines before <?php Whitespace after the closing ?> tag A previous PHP warning or notice be...
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Elementor Keeps Loading? How to Fix the admin-ajax.php 500 Error

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 If Elementor keeps loading without opening the editor, checking the browser console can reveal an error like /wp-admin/admin-ajax.php 500 . This usually means WordPress is failing while processing an AJAX request. There can be several reasons for a 500 error, including plugin conflicts, server configuration, PHP errors, or insufficient WordPress memory. However, memory limitations are one of the common things worth checking first , especially on websites using Elementor with several plugins. Is WordPress running out of memory? If your site doesn't have enough memory available, Elementor may fail to load properly. Increasing the WordPress memory limit can often resolve the problem. First, open your site's wp-config.php file. You can usually find it in the root directory of your WordPress installation through your hosting File Manager or an FTP client. Add the following before: /* That's all, stop editing! Happy publishing. */ Use: define( 'WP_MEMORY_LIMIT', '51...
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