# Troubleshooting Guide¶

We do our best to document and provide solutions for any situation you may encounter with LiteSpeed Cache plugins. If you don't see your issue listed here, there are additional support options available.

Tip

## 500 Error During Installation¶

You may experience a 500 error during installation if:

• The PHP version is less than 7.1
• PHP module packages are missing

Check your PHP version. If it's lower than PHP 7.1, you will need to upgrade to a newer version.

If you are using acceptable version of PHP, then the problem may be missing PHP modules. Check the server error log. You may see something like the following:

    [STDERR] Error: Class 'ZipArchive' not found in /var/www/html/core/lib/Drupal/Core/Archiver/Zip.php on line 30 #0 /var/www/html/core/lib/Drupal/Core/Archiver/ArchiverManager.php(42): Drupal\Core\Archiver\Zip->__construct('/tmp/lscache-dr...')

Install the specified package (php-pecl-zip in this example), and that should fix the problem.

Last update: April 20, 2022