[SOLVED] modx parse error | Cannot modify header information

Hi everybody,

My website worked well until today, now i have this message appearing at the bottom of the homepage :

Warning: Cannot modify header information - headers already sent by (output started at /home/www/dd8d9ba64a7e9cec62f59c99f0e612f6/web/v3/manager/includes/document.parser.class.inc.php:519) in /home/www/dd8d9ba64a7e9cec62f59c99f0e612f6/web/v3/manager/includes/document.parser.class.inc.php on line 2730
« modx parse error »
MODx encountered the following error while attempting to parse the requested resource:
« PHP Parse Error »

PHP error debug
Error: Cannot modify header information - headers already sent by (output started at /home/www/dd8d9ba64a7e9cec62f59c99f0e612f6/web/v3/manager/includes/document.parser.class.inc.php:519)
Error type/ Nr.: Warning - 2
File: /home/www/dd8d9ba64a7e9cec62f59c99f0e612f6/web/v3/index.php
Line: 193
Line 193 source: header('P3P: CP="NOI NID ADMa OUR IND UNI COM NAV"'); // header for weird cookie stuff. Blame IE.

Parser timing
MySQL: 0.0005 s (1 Requests)
PHP: 0.0487 s

I've looked for every similar error already posted here and tried every solution (disabling visitor loggin, looking for white space before/after the <?php, etc.) but nothing worked.

Now when I try to access certain pages, they're messed up and have a big error message in the bottom who says :

MODx is not currently installed or the configuration file cannot be found.

Do you want to install now?

My configuration is the following :

Version de MODx 1.0.0
Nom de code de version rev 5601

HP Version 5.2.17


System Linux imu245 2.6.27.48-imu-x86 #1 SMP Wed Jul 7 07:36:25 CEST 2010 i686
Build Date Jan 17 2011 14:19:19
Server API Apache 2.0 Handler
Virtual Directory Support enabled
Configuration File (php.ini) Path /opt/php/lib
Loaded Configuration File /opt/php/lib/php.ini
Scan this dir for additional .ini files (none)
additional .ini files parsed (none)
PHP API 20041225
PHP Extension 20060613
Zend Extension 220060519
Debug Build no
Thread Safety enabled
Zend Memory Manager enabled
IPv6 Support enabled
Registered PHP Streams https, ftps, compress.zlib, compress.bzip2, php, file, data, http, ftp, ssh2.shell, ssh2.exec, ssh2.tunnel, ssh2.scp, ssh2.sftp, zip
Registered Stream Socket Transports tcp, udp, unix, udg, ssl, sslv3, sslv2, tls
Registered Stream Filters zlib.*, bzip2.*, convert.iconv.*, string.rot13, string.toupper, string.tolower, string.strip_tags, convert.*, consumed, http.*

This program makes use of the Zend Scripting Language Engine:
Zend Engine v2.2.0, Copyright (c) 1998-2010 Zend Technologies
with the ionCube PHP Loader v4.2.2, Copyright (c) 2002-2012, by ionCube Ltd., and
with Zend Extension Manager v1.2.2, Copyright (c) 2003-2007, by Zend Technologies
with Zend Optimizer v3.3.3, Copyright (c) 1998-2007, by Zend Technologies

Can you please help me ?

Thank you

[ed. note: josemanosalvas last edited this post 11 years, 2 months ago.]

I dunno, maybe index.php file is changed, site is hacked, MYSQL is down, check your /manager/includes/config.inc.php file.

Thank you for your answer.

Is there a specific place where I need to look in the config.inc.php?

Hacking can be a reason then? In the manager system log, the same "parser" error keeps comming every X minutes... So far there is more than 300 pages of the same error... :/

MODx is not currently installed or the configuration file cannot be found.

I'm no expert, never had this problem, maybe the server is moved and the paths needs to be updated?

modx 1.0 is very old, and you really need to update it.

That particular error occurs when the manager/includes/config.inc.php file can't be read. Check that file for errors. It is common for hacks to try to add code to that file, and if it's done wrong it'll break the file.

All those "cannot send header" errors are because PHP and MODx are both trying to display errors and stepping on each other.

We updated to the version 1.0.8 simply overriding all the files and now it works like a charm!

Thank you all for your precious help.

Hi I am facing this problem but in the first installation step, It appears the following after I select the language and click SELECT:
Warning: Cannot modify header information - headers already sent by (output started at /home/zyd2013/public_html/v1/setup/lang/es/default.inc.php:1) in /home/zyd2013/public_html/v1/setup/controllers/language.php on line 15

Warning: Cannot modify header information - headers already sent by (output started at /home/zyd2013/public_html/v1/setup/lang/es/default.inc.php:1) in /home/zyd2013/public_html/v1/setup/includes/request/modinstallrequest.class.php on line 235

I'm trying to install Modx Revolution version 2.2.7-pl

Thanks in advanced