[OS X Emacs] problem with auctex

[Johannes Brauer]

Hi!

opening a latex file I get the following warning:

Warning (auctex): `font-latex-update-font-lock' should not be called.
It is obsolete and going to be removed.
If you have called `font-latex-add-keywords' and want to refresh fontification,
call `font-lock-flush' instead.
If you changed syntactic fontification, e.g., one of the variables
- `LaTeX-verbatim-macros-with-delims'
- `LaTeX-verbatim-macros-with-delims-local'
- `LaTeX-verbatim-macros-with-braces'
- `LaTeX-verbatim-macros-with-braces-local'
- `LaTeX-verbatim-environments'
- `LaTeX-verbatim-environments-local'
- `font-latex-syntactic-keywords-extra'
then call `font-latex-set-syntactic-keywords'.

I am using Aquamacs 3.5  GNU Emacs 25.3.50.1 (x86_64-apple-darwin16.7.0, NS, macOs 10.15.4

I have no idea what I could do. Any help?

Johannes