SID-01685: No Output

Status:	Answered	TWiki version:		Perl version:
Category:		Server OS:		Last update:	11 years ago

As of around 06:00 this morning local time, twiki has stopped giving any output!

• The browser says: Internal Server Error
• The apache error log says: Premature end of script headers: view
• The log file data/log201304.txt is dated 05:51
• If I cd to the bin directory and run ./view I get no output at all and an exit status of 9.

None of the filesystems are full and a system reboot doesn't help.

The data files all seem to be there

This occured at the same time as the nightly yum upgrade which reports installing perl-5.8.8-40.el5_9.x86_64 at 06:05 (I don't know the previous version). So I'm guessing this broke something but since I don't get any error messages it's rather hard to find out more.

Our twiki version is quite old and I'm not quite sure how to find out what version we are running.

Thanks

John

-- John Rowe - 2013-04-19

Discussion and Answer

I have found another error file in /tmp. When I try to run ./view it adds the line:

Undefined subroutine &Scalar::Util::blessed called at /usr/lib/perl5/5.8.8/overload.pm line 89

So it does loook like a perl update has broken something.

John

-- John Rowe - 2013-04-19

SOLVED!

(Is solving your own problem like laughing at your own joke?)

It seems that the nightly update installed a bad version of Scalar::utils

Manually installing the latest version from CPAN fixed the problem.

John

-- John Rowe - 2013-04-19

This happened for me again.

Seems it happens when time I do yum update on my legacy CentOS 5 box.

And yes the fix is to

browse to http://search.cpan.org/dist/Scalar-List-Utils/ and

download Scalar-List-Utils-1.41.tar.gz and unpack it and

follow the instructions in the README file

(repeat every time yum update breaks perl).

-- Thomas Schodt - 2014-12-09

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