Which language is better and easier to learn to create a dashboard?

I have a similar decision a short time ago, if your project is small I recommend codeigniter because it is an extremely light PHP framework, especially since there is a lot of information and examples, even in github you can download almost finished examples and adapt them, besides not you need the server to have special features such as nodejs python etc.

If your project is big it could be Laravel or MEAN, but you must make sure that the server where you want to host it has the possibility to install everything you need, if it is for your localhost or internal network there is not much problem, but if you want it to work Through a domain, make sure that the provider is compatible with the technology that you will upload in your project