pdfpages

When the following is included in my .tex file:

\includepdf[pages={-},fitpaper={true}]{"Assignment 1 Brief.pdf}


I receive multiple lines of errors stating

Undefined control sequence. ...,fitpaper={true}]{"Assignment 1 Brief.pdf}
Not defining \perthousand.
Not defining \micro.
File "Assignment 1 Brief.pdf' not found
File "Assignment 1 Brief.pdf' not found
File "Assignment 1 Brief.pdf' not found
File "Assignment 1 Brief.pdf' not found
File "Assignment 1 Brief.pdf' not found
File "Assignment 1 Brief.pdf' not found
File "Assignment 1 Brief.pdf' not found
File "Assignment 1 Brief.pdf' not found
File "Assignment 1 Brief.pdf' not found
File "Assignment 1 Brief.pdf' not found
\headheight is too small (34.5pt): Make it at least 34.54448pt.
destination with the same identifier (name{page.2}) has been already used, duplicate ignored<to be read again> \relax l.24 \end{document} [2


When I remove the line, the document compiles without error.

What am I doing incorrectly!

Rename your PDF file Test.pdf and place it in the same folder as the TEX file.

If the following code works then pdfpages works (in principle) and there is probably another problem (as already discussed in the comments of your question, e. g. spaces in file names or paths or strange " characters.).

\documentclass{article}
\usepackage{pdfpages}
\begin{document}
\includepdf[pages=-,fitpaper=true]{Test.pdf}
\end{document}
`

It is very difficult to help without a proper code example -- this was already mentioned in the comments of your question.