Basically its just a python flask webserver which can be used to keep any repl/herokuapp or any other services like glitch bla bla etc you need to edit your own code and attach it there in order to make the webserver work.....
install or add **flask** in requirements.txtmake a file called **wserver.py** and paste the contents of **wserver.py** to your repo/codefind your python start file / the file/folder which starts the app then there **import wserver** it will look like **from wserver import keep_alive**in the end line of start file type **keep_alive()**