I have around 25 warning about package hyperref warning: token not allowed in a pdf string removing math shift At each \subsubsection in paper. How to solve it? Can expert help me?

  • Show a complete minimal example that demonstrates the problem. Apr 17, 2019 at 8:02

1 Answer 1


Special symbols (including many math symbols) are not allowed in the bookmarks. Provide an alternative string

 \subsection{text \texorpdfstring{$\alpha$}{alpha} text}

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