Both actions "source" and "diff" appear to work fine:
http://www.elfgestirn.de/Verein/HomePage?action=source
http://www.elfgestirn.de/Verein/HomePage?action=diff
but not when the history has markup processed:
http://www.elfgestirn.de/Verein/HomePage?action=diff&source=n
so my guess is some markup processing causes the blanking of the pages.
In the past, without any other warning or error message, the most
frequent reason for a blank page or section was a call to
htmlspecialchars() in a recipe/addon/skin.
With recent PmWiki versions, any call to htmlspecialchars() can be
replaced with a call to PHSC() which is a PmWiki helper function that
safely calls htmlspecialchars().
Depending on how the server is configured, it is possible that another
function call may cause this. (Recent PHP versions change the rules and
something that worked fine in earlier PHP versions may stop working
after a server upgrade. I try hard to follow and fix any such cases, or
implement and document workarounds.)
It may be helpful to enable PmWiki diagnostics and open the page
http://www.elfgestirn.de/Verein/HomePage?action=ruleset
where some custom markup rules may be marked as obsolete.
Again, try disabling (commenting out) *all* recipes and local
configuration, then enable one and see if it works or becomes blank.
Then proceed to the next one.
See https://www.pmwiki.org/wiki/PmWiki/Troubleshooting -- read all
sections, including the first one and the one on blank pages (since
source and diff actions work, it is likely NOT a problem with file
permissions but with something else).
Petko
On 12/09/2020 17:47, Marcel Schweiker wrote:
Dear all,
I really hope you can help me out after a full day of trying to solve
this.
My page based on pmwiki was blank (no content) when I started this
morning
- despite working a few weeks ago, when I checked the last time. I then
upgraded this morning from 2.2.8 to the latest version of pmwiki and
also
upgraded all recipes.
The result is, that header and footer are visible and working, but all
else
(sidebar left and main content) are not there.
I checked the $EnableRelativePageVars issue as I upgraded from 2.2.8
(no
change with setting it to 0 or 1) and also manually
activated/deactivated
all recipes individually (no change in the pages behaviour). I am not
sure
how to work with a test page, because I cannot login for editing as the
login fields are on the main part of the page, which is not displayed.
I am using the maguila skin, which might be an issue, but I have the
same
behaviour when switching to pmwiki skin.
Any help would be highly appreciated. The page is elfgestirn.de
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