LaTeX.org

Welcome to the forum!

Can you post the content (or start) of the file mylit.bbl here, as code or as attachment?

Stefan

Good to hear that it works!

Visit us again in case of any question.

Stefan

The file is here: https://ctan.org/pkg/pdftexcmds There are .dtx and .ins file though to create the .sty file. On the other hand, google "pdftexcmds.sty" and you see sample files, different age though. Just if you cannot translate the .dtx file. However, quick ideas: ⋅  some LaTe...

Ok, then it may be in the way you are compiling the document.

Do you get a .log file that you can post? That contains debugging information.

Stefan

That code looks ok except that I never saw a package called fyp.

Do you use that? If not, then remove the line

\usepackage{fyp}

Stefan

That is actually code from the `pdftexcmds.sty` file, part of: \ifluatex \ifnum\luatexversion<36 % \def\pdftexcmds@directlua{\directlua0 }% \else \let\pdftexcmds@directlua\directlua \fi \begingroup \newlinechar=10 % \endlinechar=\newlinechar \pdftexcmds@directlua{% if tex.enableprimitives then tex.e...

gzah wrote:Then this message or text, is displayed on the front page.

Which message? LaTeX error messages are long and refere to the code line.

And, can you post the .log file here, as attachment?

Stefan

Welcome to the forum!

I don't see LaTeX code nor used packages, and there's no error message. Perhaps provide more information?

Stefan

Can you post your .toc file? Either as code or as attachment here.

And does the Chapter4.tex file start with some code, which code?

Stefan

Welcome to the forum!

Perhaps you have a command like \setcounter{secnumdepth}{...} in the code before that chapter, or a command that has implicitly the same effect. Perhaps show relevant code here.

Stefan