Question

When I try to load TWikiGroups or simply include the

%GROUPS%

Error text:

TWiki detected an internal error - please check your TWiki logs and webserver logs for more information.

Can't use an undefined value as an ARRAY reference

TWiki Warning Log text:

| 11 Feb 2007 - 08:10 | Can't use an undefined value as an ARRAY reference at C:/twiki/lib/TWiki.pm line 3616.
 at C:/twiki/lib/TWiki.pm line 3616
   TWiki::_GROUPS('TWiki=HASH(0x15245d8)', 'TWiki::Attrs=HASH(0x2267388)', 'TWikiGroups', 'Main') called at C:/twiki/lib/TWiki.pm line 2395
   TWiki::_expandTagOnTopicRendering('TWiki=HASH(0x15245d8)', 'GROUPS', 'undef', 'TWikiGroups', 'Main') called at C:/twiki/lib/TWiki.pm line 2314
   TWiki::_processTags('TWiki=HASH(0x15245d8)', '---+ TWiki Groups\x{d}\x{a}\x{d}\x{a}These groups can be used to define fine ...', 'CODE(0x1d98fe0)', 16, 'TWikiGroups', 'Main') called at C:/twiki/lib/TWiki.pm line 2240
   TWiki::_expandAllTags('TWiki=HASH(0x15245d8)', 'SCALAR(0x219f484)', 'TWikiGroups', 'Main') called at C:/twiki/lib/TWiki.pm line 2589
   TWiki::handleCommonTags('TWiki=HASH(0x15245d8)', '---+ TWiki Groups\x{d}\x{a}\x{d}\x{a}These groups can be used to define fine ...', 'Main', 'TWikiGroups') called at C:/twiki/lib/TWiki/UI/View.pm line 375
   TWiki::UI::View::_prepare('---+ TWiki Groups\x{d}\x{a}\x{d}\x{a}These groups can be used to define fine ...', 'TWiki=HASH(0x15245d8)', 'Main', 'TWikiGroups', 'TWiki::Meta=HASH(0x2143f5c)', 0) called at C:/twiki/lib/TWiki/UI/View.pm line 359
   TWiki::UI::View::view('TWiki=HASH(0x15245d8)') called at C:/twiki/lib/TWiki/UI.pm line 157
   TWiki::UI::__ANON__() called at C:/twiki/lib/CPAN/lib//Error.pm line 379
   eval {...} called at C:/twiki/lib/CPAN/lib//Error.pm line 371
   Error::subs::try('CODE(0x225390)', 'HASH(0x217fa18)') called at C:/twiki/lib/TWiki/UI.pm line 197
   TWiki::UI::run('CODE(0x152ec80)', 'view', 1) called

Apache error.log text:

[Sun Feb 11 10:44:25 2007] [error] [client 127.0.0.1] Can't use an undefined value as an ARRAY reference at C:/twiki/lib/TWiki.pm line 3616., referer: http://localhost/twiki/bin/view
[Sun Feb 11 10:44:25 2007] [error] [client 127.0.0.1]  at C:/twiki/lib/TWiki.pm line 3616, referer: http://localhost/twiki/bin/view
[Sun Feb 11 10:44:26 2007] [error] [client 127.0.0.1]    TWiki::_GROUPS('TWiki=HASH(0x1524514)', 'TWiki::Attrs=HASH(0x21d1d50)', 'TWikiGroups', 'Main') called at C:/twiki/lib/TWiki.pm line 2395, referer: http://localhost/twiki/bin/view
[Sun Feb 11 10:44:26 2007] [error] [client 127.0.0.1]    TWiki::_expandTagOnTopicRendering('TWiki=HASH(0x1524514)', 'GROUPS', 'undef', 'TWikiGroups', 'Main') called at C:/twiki/lib/TWiki.pm line 2314, referer: http://localhost/twiki/bin/view
[Sun Feb 11 10:44:26 2007] [error] [client 127.0.0.1]    TWiki::_processTags('TWiki=HASH(0x1524514)', '---+ TWiki Groups\x{d}\x{a}\x{d}\x{a}These groups can be used to define fine ...', 'CODE(0x1d98b10)', 16, 'TWikiGroups', 'Main') called at C:/twiki/lib/TWiki.pm line 2240, referer: http://localhost/twiki/bin/view
[Sun Feb 11 10:44:26 2007] [error] [client 127.0.0.1]    TWiki::_expandAllTags('TWiki=HASH(0x1524514)', 'SCALAR(0x2169bdc)', 'TWikiGroups', 'Main') called at C:/twiki/lib/TWiki.pm line 2589, referer: http://localhost/twiki/bin/view
[Sun Feb 11 10:44:26 2007] [error] [client 127.0.0.1]    TWiki::handleCommonTags('TWiki=HASH(0x1524514)', '---+ TWiki Groups\x{d}\x{a}\x{d}\x{a}These groups can be used to define fine ...', 'Main', 'TWikiGroups') called at C:/twiki/lib/TWiki/UI/View.pm line 375, referer: http://localhost/twiki/bin/view
[Sun Feb 11 10:44:26 2007] [error] [client 127.0.0.1]    TWiki::UI::View::_prepare('---+ TWiki Groups\x{d}\x{a}\x{d}\x{a}These groups can be used to define fine ...', 'TWiki=HASH(0x1524514)', 'Main', 'TWikiGroups', 'TWiki::Meta=HASH(0x2112e10)', 0) called at C:/twiki/lib/TWiki/UI/View.pm line 359, referer: http://localhost/twiki/bin/view
[Sun Feb 11 10:44:26 2007] [error] [client 127.0.0.1]    TWiki::UI::View::view('TWiki=HASH(0x1524514)') called at C:/twiki/lib/TWiki/UI.pm line 157, referer: http://localhost/twiki/bin/view
[Sun Feb 11 10:44:26 2007] [error] [client 127.0.0.1]    TWiki::UI::__ANON__() called at C:/twiki/lib/CPAN/lib//Error.pm line 379, referer: http://localhost/twiki/bin/view
[Sun Feb 11 10:44:26 2007] [error] [client 127.0.0.1]    eval {...} called at C:/twiki/lib/CPAN/lib//Error.pm line 371, referer: http://localhost/twiki/bin/view
[Sun Feb 11 10:44:26 2007] [error] [client 127.0.0.1]    Error::subs::try('CODE(0x225290)', 'HASH(0x215dc1c)') called at C:/twiki/lib/TWiki/UI.pm line 197, referer: http://localhost/twiki/bin/view
[Sun Feb 11 10:44:26 2007] [error] [client 127.0.0.1]    TWiki::UI::run('CODE(0x152e6fc)', 'view', 1) called, referer: http://localhost/twiki/bin/view

Environment

-- BillLay - 11 Feb 2007

Answer

If you answer a question - or someone answered one of your questions - please remember to edit the page and set the status to answered. The status selector is below the edit box.

This seems to be a bug, tracked in Bugs:Item3573. Please provide details there.

-- PeterThoeny - 11 Feb 2007

I have a persisting problem that matches this description exactly. I am trying to install TWiki on my company intranet, and everything seems to work except GROUPS-variable doesnt work. I tried to use the patch from Bugs:Item3573 but I guess RcsFile.pm has changed since, because there is no conditional sentence to replace (See Bugs:Item3573).

I am running TWiki 4.1.2 on Debian Linux.

-- MikkoLaakso - 13 Apr 2007

Problem solved: I changed one line in config initially, namely {SuperAdminGroup} . After this, the GROUPS-variable was no longer accessible. After I changed this setting to its default (TWikiAdminGroup), everything works again!

-- MikkoLaakso - 13 Apr 2007

This is most likely fixed, see Bugs:Item3573.

-- PeterThoeny - 15 Apr 2007

Running version 4.1.1 under Gentoo Linux. I am getting the same error when I change the SuperAdminGroup to include a User. I.E.

from TWikiAdminGroup to TWikiAdminGroup,Main.DuffieCooley

The TWikiGroup Page fails to load with the same error described above. I edited the RcsFile.pm according to Bugs:Item3573 and Still no change. My work around was to create a SuperAdminGroup. And put that group in the field. Seems that the script might be trying to call the user (DuffieCooley) as a hash. Which might not work as it's a user... part of the Main.Users Hash or something.

Thanks,

-- DuffieCooley - 18 May 2007

That is not a workaround, that is the recommended way to maintain the admin group.

-- PeterThoeny - 18 May 2007

As noted the Documentation stated to add users to a group that is defined in the SuperAdminGroup variable not add a user to the SuperAdminGroup Variable.

Very Different. Hopefully this comment save someone else from making the same mistake.

Cheers,

-- DuffieCooley - 18 May 2007