A Joomla error is a problem with the software that you are using to manage your website. They can be caused by a problem with the software itself, or by a problem with the information that you are using to create your website.
When you encounter a Joomla error, you will likely see a message on your website that provides information about the problem. Sometimes, you will also see a link that will take you to a page where you can enter information to help solve the problem.
If you are unable to solve the problem yourself, you may need to contact Joomla support. They will be able to help you resolve the issue, and may also provide you with instructions on how to prevent similar problems from happening in the future.
When you encounter a Joomla error, it is important to remember that it is not your fault. Make sure that you are using the latest version of the software, and that you are following the instructions that Joomla provides.
If the problem persists, you may need to contact Joomla support.