How to use import pacakge(Error:test.aux not found)import

Question

I tries to run my latex as a project, with each section using a different text file. But I seem unable to let import command do what I want it to do.

Here is the MWE: mainfile

\documentclass{article}
\usepackage{import}
\begin{document}
\section{test}
 \import{/section}{testtest}
\end{document}

subfile

testtest

directory structure:

mainfile

errorquote:

! LaTeX Error: File `test.aux' not found.

Type X to quit or to proceed, or enter new name. (Default extension: aux)

Enter file name: