hey, my server is giving a error https://gta-fivem.org/index.php?attachment/663-pasted-from-clipboard-png/
here you can see my errors
You are using an outdated and discontinued version of es_extended.
Please use https://github.com/esx-framework/es_extended for the latest working releases 
There is an Folder that is called es_extendetmaster, is that the right?
I just place that into my [essentials]
where i place the folder?
Rename the file to es_extended
Then add: ensure es_extended to the server.cfg
When i start the server iam in a loadinscreen loop, how i fix it?
Are you getting any errors?
SCRIPT ERROR: @trew_hud_ui/server/server.lua:12: attempt to index a nil value (global ‘ESX’)
Take a look at this topic, it maybe more of a help.
As for the MYSQL error your getting, make sure you have entered the right details to your database.
in which file i put that in?
At the top of your server file.
here?
no not there, read through this topic, as you should get an idea.