A 500 Internal Server Error usually means something has gone wrong on the server, but the server cannot specify the exact issue. In PHP, this often results from syntax errors in your code, incorrect file or folder permissions, or misconfigured .htaccess files. It can also occur if your script exceeds server limits like memory or execution time.
To troubleshoot, start by checking your server's error logs, enabling PHP error reporting, and reviewing recent code or configuration changes. Make sure your PHP files have proper permissions (typically 644) and directories are set to 755. If you're using an .htaccess file, test by temporarily renaming it to see if the issue resolves.
For a quick test, upload a simple PHP file with phpinfo() to confirm whether PHP is running properly. If you're on shared hosting, your hosting provider may also help identify the cause.
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