Knowledgebase: Support
Control Web Panel (CWP): Fixing the 500 Internal Server Error!
Posted by Susan Tyson on 20 July 2023 09:44 AM


Control Web Panel (CWP) is a popular web hosting control panel that simplifies server management for website owners and system administrators. However, encountering a 500 Internal Server Error can be frustrating and disruptive to your website's operation. This error message indicates that something has gone wrong on the server, but the specific cause may vary. In this article, we will explore some common reasons for the 500 Internal Server Error in CWP and provide effective troubleshooting steps to resolve it, ensuring your website runs smoothly once again.

Common Causes of 500 Internal Server Error: Before diving into the solutions, it's essential to understand the potential causes of the 500 Internal Server Error in CWP:

  1. Incorrect File Permissions: Improper file permissions can prevent the server from accessing required files, leading to the error.

  2. Faulty .htaccess File: An incorrect or misconfigured .htaccess file can trigger the 500 error.

  3. PHP Version Issues: Incompatible or outdated PHP versions can conflict with your website's code and cause the error.

  4. Exhausted PHP Memory Limit: If your PHP scripts require more memory than allowed, the server might produce a 500 error.

Troubleshooting Steps to Fix the 500 Internal Server Error:

Step 1: Check Error Logs:

The first step in diagnosing the 500 error is to check the error logs. In CWP, you can find the logs at /usr/local/cwpsrv/logs/. Look for the specific error message to understand what caused the issue.

Step 2: Verify File Permissions:

Ensure that the directories and files in your website's root directory have the correct permissions. The standard permission settings are 755 for directories and 644 for files. You can adjust permissions using the chmod command.

Step 3: Review .htaccess File:

A faulty .htaccess file can often be the culprit. Rename the .htaccess file temporarily to see if the error disappears. If it does, check for syntax errors or conflicting directives in the file.

Step 4: Check PHP Version and Memory Limit:

Ensure that your website is using a compatible PHP version. You can change the PHP version in CWP's PHP Selector. If the memory limit is causing the error, increase it in the PHP configuration or .htaccess file.

Step 5: Disable Plugins/Modules:

If the error occurs after installing or updating plugins or modules, try disabling them one by one to identify the problematic one.

Step 6: Restart Services:

After making changes, restart the web server and PHP-FPM to apply the modifications:

sudo systemctl restart httpd
sudo systemctl restart php-fpm

Step 7: Seek Professional Assistance:

If you've exhausted all troubleshooting options and the 500 Internal Server Error persists, consider reaching out to a professional web developer or your hosting provider for further assistance.


Experiencing a 500 Internal Server Error in Control Web Panel can be a frustrating experience, but it's not an insurmountable challenge. By following the troubleshooting steps outlined in this article, you can identify and resolve the underlying issues causing the error, ensuring your website operates smoothly and efficiently.





Tag Words: Control Web Panel, CWP, 500 Internal Server Error, Server Management, Web Hosting, Troubleshooting, Server Error, Website Maintenance, Server Configuration, Web Server.

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