Dear Maintainer,

Here is a snippet of the beginning of
 /usr/share/texlive/texmf-dist/tex/latex/tikzposter/tikzposter.cls
containing the license information:

%% This file may be distributed and/or modified under the
%% conditions of the LaTeX Project Public License, either
%% version 2.0 of this license or (at your option) any later
%% version. The latest version of this license is in:
%%
%% http://www.latex-project.org/lppl.txt
%%
%% and version 2.0 or later is part of all distributions of
%% LaTeX version 2013/12/01 or later.

Version 2.0 of LPPL doesn't seem to exist.
The provided URL points to version 1.3c.

Best wishes,

	Gábor Braun
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*** End of the template - remove these template lines ***

Am 17.03.2021 um 11:15 teilte Braun Gábor mit:

Hi,
We don't care about upstream bugs, b/c of missing man power. Please be
so kind to report directly to the authors of tikzposter.

Thanks,
   Hilmar