For the page https://de.wikivoyage.org/wiki/Pompeji, Download as PDF gives the error:
Rendering failed Generation of the document file has failed. Status: Rendering process died with non zero code: 1 Return to Pompeji
Tried purge and edit to no effect.
! LaTeX Error: Something's wrong--perhaps a missing \item.
See the LaTeX manual or LaTeX Companion for explanation.
Type H <return> for immediate help.
...
l.18 \item{
}\textbf{\nolinkurl{Datei:Lupanare.PNG}} \emph{Quelle:} \href{htt...
Output written on output.pdf (5 pages).
Transcript written on output.log.Do you think OCG needs a "debug" mode where the raw LaTeX can be output? That would be useful for debugging.
Also if it output the actual error message, instead of the meaningless error code 1, that would be a step forward. I can't imagine that the error would ever contain private/secure data...?
As already announced in Tech News, OfflineContentGenerator (OCG) will not be used anymore after October 1st, 2017 on Wikimedia sites. OCG will be replaced by Electron. You can read more on mediawiki.org.