This exact situation was discussed at Page not found (404) Include not working. In particular, see Page not found (404) Include not working - #7 by KenWhitesell
Side Note: When posting code or templates here, surround the code (or template) between lines of three backtick - ` characters. This means you’ll have a line of ```, then your code, then another line of ```. This forces the forum software to keep the text properly formatted.
(I’ve taken the liberty of fixing your original post for this.)