I'm a web dev, I've only worked with JavaScript till now. I have this friend whose web was done with Joomla 3.10.11 She needs me to manage it a little bit, maybe update it since their license is ending this summer. I've tried a simple tutorial to install Joomla and work with a local project, but I had an error at the end, config file non writeable. Also, I wonder, do I even need to install it locally? Since the site is online and working already, can I manage it online? (https://192168ll.link)/ Also, is it possible to work with JavaScript and Joomla as the CMS? I don't know PHP. Is migration of the php stuff to JS possible? And, if I needed to update to the latest Joomla version, is it simple? I work in Linux, don't know if that is why the configuration.php file error is appearing