Question

Something is clustering the Apache error_log file of our system with tons of the following 'errors'

... [notice] cannot use a full URL in a 401 ErrorDocument directive --- ignoring!
... view: Use of uninitialized value in hash element at ../lib/TWiki/Prefs.pm line 413.
....
... view: Use of uninitialized value in substitution (s///) at ../lib/TWiki/Prefs.pm line 636.
... view: Use of uninitialized value in pattern match (m//) at ../lib/TWiki/Plugins/TablePlugin.pm line 187.

Environment

-- FranzJosefSilli - 14 Oct 2004

Answer

The 401 error is due to using an absolute URL in the ErrorDocument in your .htaccess.

• Did help, thanks. - FJ

There are no substitutions at those line numbers in my installation. Is your Cairo hacked/bodged/patched?

• Slightly, I just left the old Regex expressions in TWikiDotPm so that older Plugins don't break immediately (till I get newer versions or am able to patch them myself), but I am about to switch it to the latest Alpha from SVN, if ever I get a connection again. - FJ

TablePlugin I can't help with

-- CrawfordCurrie - 14 Oct 2004

../lib/TWiki is an idication that you use a relative path. Make this absolute in twiki/bin/setlib.cfg

• Didn't help. - FJ

-- PeterThoeny - 14 Oct 2004

Thanks for the quick response! Will have another deep look in my configuration today and report back progress. Thanks!

-- FranzJosefSilli - 15 Oct 2004

Didn't find any flaw in my TWiki installation nor in the Plugins. It seems an problem of the Apache configuration which I have no access to so I changed the first line of the scripts in ~/bin to

#!/usr/bin/perl -XT

Thanks anyway.

-- FranzJosefSilli - 19 Oct 2004

Maybe the patch in UploadAndSaveHangingForever does solve my problem too.

-- FranzJosefSilli - 29 Oct 2004

I'm seeing the issue in TablePlugin.pm using the 20041030 beta. Here's the relevant code:

sub handleTableAttrs
{
    my( $args ) = @_;

    return "" if( $args =~/^\s*$/ );

I'm guessing that something is invoking handleTableAttrs with no arguments.

...

I threw in some calls to carp to track this down and the failing line is in setDefaults:

handleTableAttrs( $prefsAttrs );   # Preferences setting

$prefsAttrs is undef, but that shouldn't be, because TWiki::Func::getPreferencesValue should return an empty string for an undefined preference.

Quick fix is to change line 186 to this:

return "" if( !$args || $args =~/^\s*$/ );

-- KennethPorter - 02 Dec 2004