This error message could appear while installing different Joomla! plugins. It could happen when adding new plugins, modules, components, or templates. The error message’s overall meaning is that the extension file is corrupted, however, there are two usual causes of such problems.

1. If you are trying to install an archived extension, your hosting server’s zip file may be having issues. You could try the following as a solution:

Locally extract the archive on your computer, then use FTP to upload it to your hosting server. Afterward, select the option to install the extension from a server directory. Through Joomla!’s normal Install extension interface, you can choose that.

It should be noted that since zip is installed and functional on every server, this cannot occur on SiteGround servers.

2. There are errors or gaps in the extension package. This is the most likely reason if, despite using the previous instructions, you were unable to install the extension. Therefore, it is advised that you never try to use the package.

Why do People Use Joomla?

The explanation is straightforward, easy, and effective. This gives the developer a ton of flexibility and customizability, even though WordPress is equally easy to use and customize. When installing Joomla, you have the option of enabling or disabling the modules. Additionally, it is safer than other CMSs.

Joomla also heavily relies on templates; if you don’t like how the site looks, you may install different templates from a variety of online sources. This expedites the process of designing the website’s front end.

Advantages and Disadvantages

We will highlight some advantages and disadvantages Joomla has.

Advantages

1. This is easy to install and set up. You will have a much easier time than installing something like Drupal.
2. It supports the installation of plugins to extend its feature set. You can set up both paid and free plugins from the Official Joomla repository or any of the many Joomla plugin sites.
3. It has excellent user control options enabling you to allow or disallow site features for users.
4. Updating the CMS does not require any special software or digging through code.
5. These have easy options to create hierarchies so you can navigate the site easily, even if It has thousands of pages.

Disadvantages

1. Getting to grips with Joomla is more complex than WordPress, Vix, or Blogspot.
2. Adding more and more modules and templates increases the load on your server resources, impacting its efficiency.
3. Compared to WordPress, the number of plugins for Joomla is low; to add insult to injury, you will find that while there may be a free WordPress plugin for your task, the Joomla counterpart is paid.
4. It may have some plugin compatibility issues. If you face one with your site, you must spend time with the PHP code to solve it.
5. This is the second most used CMS in the world, making it an easy target for automated attacks on websites.