blank page and "PHP Warning: Cannot modify header information"

[gas]

Hi all,
I have a problem with sendy. It's an online platform I use to send newsletter to my subscribers.

When I open a sendy webpage with litespeed on, I get a blank page (or just some header is displayed correctly).

These are the errors I get in the log. Thanks!!


[lshttpd:10529] Server Stopped!
[Thu Feb 27 23:34:43 2014] [notice] SSL FIPS mode disabled
[Thu Feb 27 23:34:43 2014] [notice] ModSecurity for Apache/2.7.3 (http://www.modsecurity.org/) configured.
[Thu Feb 27 23:34:43 2014] [notice] ModSecurity: APR compiled version="1.4.6"; loaded version="1.4.6"
[Thu Feb 27 23:34:43 2014] [notice] ModSecurity: PCRE compiled version="8.21 "; loaded version="8.21 2011-12-12"
[Thu Feb 27 23:34:43 2014] [notice] ModSecurity: LIBXML compiled version="2.9.0"
[Thu Feb 27 23:34:44 2014] [notice] SSL FIPS mode disabled
[Thu Feb 27 23:34:44 2014] [notice] Apache/2.2.24 (Unix) mod_ssl/2.2.24 OpenSSL/1.0.0-fips mod_bwlimited/1.4 configured -- resuming normal operations
[Thu Feb 27 23:34:44 2014] [error] [client 193.252.149.16] PHP Warning: PHP Startup: Unable to load dynamic library '/usr/local/lib/php/extensions/no-debug-non-zts-20100525/apc.so' - /usr/local/lib/php/extensions/no-debug-non-zts-20100525/apc.so: cannot open shared object file: No such file or directory in Unknown on line 0
[Thu Feb 27 23:34:44 2014] [error] [client 193.252.149.15] PHP Warning: PHP Startup: Unable to load dynamic library '/usr/local/lib/php/extensions/no-debug-non-zts-20100525/apc.so' - /usr/local/lib/php/extensions/no-debug-non-zts-20100525/apc.so: cannot open shared object file: No such file or directory in Unknown on line 0
[Thu Feb 27 23:34:44 2014] [error] [client 193.252.149.15] PHP Warning: PHP Startup: Unable to load dynamic library '/usr/local/lib/php/extensions/no-debug-non-zts-20100525/apc.so' - /usr/local/lib/php/extensions/no-debug-non-zts-20100525/apc.so: cannot open shared object file: No such file or directory in Unknown on line 0
[Thu Feb 27 23:34:45 2014] [error] [client 81.52.143.35] PHP Warning: PHP Startup: Unable to load dynamic library '/usr/local/lib/php/extensions/no-debug-non-zts-20100525/apc.so' - /usr/local/lib/php/extensions/no-debug-non-zts-20100525/apc.so: cannot open shared object file: No such file or directory in Unknown on line 0
[Thu Feb 27 23:34:46 2014] [error] [client 93.41.110.115] PHP Warning: PHP Startup: Unable to load dynamic library '/usr/local/lib/php/extensions/no-debug-non-zts-20100525/apc.so' - /usr/local/lib/php/extensions/no-debug-non-zts-20100525/apc.so: cannot open shared object file: No such file or directory in Unknown on line 0
[Thu Feb 27 23:34:47 2014] [error] [client 178.255.154.2] PHP Warning: PHP Startup: Unable to load dynamic library '/usr/local/lib/php/extensions/no-debug-non-zts-20100525/apc.so' - /usr/local/lib/php/extensions/no-debug-non-zts-20100525/apc.so: cannot open shared object file: No such file or directory in Unknown on line 0
[Thu Feb 27 23:34:49 2014] [error] [client 92.20.81.22] PHP Warning: PHP Startup: Unable to load dynamic library '/usr/local/lib/php/extensions/no-debug-non-zts-20100525/apc.so' - /usr/local/lib/php/extensions/no-debug-non-zts-20100525/apc.so: cannot open shared object file: No such file or directory in Unknown on line 0
[Thu Feb 27 23:34:50 2014] [error] [client 66.249.73.105] PHP Warning: PHP Startup: Unable to load dynamic library '/usr/local/lib/php/extensions/no-debug-non-zts-20100525/apc.so' - /usr/local/lib/php/extensions/no-debug-non-zts-20100525/apc.so: cannot open shared object file: No such file or directory in Unknown on line 0
[Thu Feb 27 23:34:50 2014] [error] [client 92.20.81.22] PHP Warning: Cannot modify header information - headers already sent by (output started at /home/musicadi/public_html/sendy/includes/header.php:10) in /home/musicadi/public_html/sendy/includes/functions.php on line 5
[Thu Feb 27 23:34:50 2014] [error] [client 81.52.143.32] PHP Warning: PHP Startup: Unable to load dynamic library '/usr/local/lib/php/extensions/no-debug-non-zts-20100525/apc.so' - /usr/local/lib/php/extensions/no-debug-non-zts-20100525/apc.so: cannot open shared object file: No such file or directory in Unknown on line 0
[Thu Feb 27 23:34:53 2014] [error] [client 193.252.118.164] PHP Warning: PHP Startup: Unable to load dynamic library '/usr/local/lib/php/extensions/no-debug-non-zts-20100525/apc.so' - /usr/local/lib/php/extensions/no-debug-non-zts-20100525/apc.so: cannot open shared object file: No such file or directory in Unknown on line 0
[Thu Feb 27 23:34:54 2014] [error] [client 92.20.81.22] PHP Warning: PHP Startup: Unable to load dynamic library '/usr/local/lib/php/extensions/no-debug-non-zts-20100525/apc.so' - /usr/local/lib/php/extensions/no-debug-non-zts-20100525/apc.so: cannot open shared object file: No such file or directory in Unknown on line 0, referer: http://www.musicadigitale.net/sendy/
[Thu Feb 27 23:34:55 2014] [error] [client 66.249.73.105] PHP Warning: PHP Startup: Unable to load dynamic library '/usr/local/lib/php/extensions/no-debug-non-zts-20100525/apc.so' - /usr/local/lib/php/extensions/no-debug-non-zts-20100525/apc.so: cannot open shared object file: No such file or directory in Unknown on line 0
[Thu Feb 27 23:34:56 2014] [error] [client 66.249.73.105] PHP Warning: PHP Startup: Unable to load dynamic library '/usr/local/lib/php/extensions/no-debug-non-zts-20100525/apc.so' - /usr/local/lib/php/extensions/no-debug-non-zts-20100525/apc.so: cannot open shared object file: No such file or directory in Unknown on line 0
[Thu Feb 27 23:34:58 2014] [error] [client 81.52.143.35] PHP Warning: PHP Startup: Unable to load dynamic library '/usr/local/lib/php/extensions/no-debug-non-zts-20100525/apc.so' - /usr/local/lib/php/extensions/no-debug-non-zts-20100525/apc.so: cannot open shared object file: No such file or directory in Unknown on line 0
[Thu Feb 27 23:34:59 2014] [error] [client 81.52.143.16] PHP Warning: PHP Startup: Unable to load dynamic library '/usr/local/lib/php/extensions/no-debug-non-zts-20100525/apc.so' - /usr/local/lib/php/extensions/no-debug-non-zts-20100525/apc.so: cannot open shared object file: No such file or directory in Unknown on line 0
[Thu Feb 27 23:35:00 2014] [error] [client 66.249.73.105] PHP Warning: PHP Startup: Unable to load dynamic library '/usr/local/lib/php/extensions/no-debug-non-zts-20100525/apc.so' - /usr/local/lib/php/extensions/no-debug-non-zts-20100525/apc.so: cannot open shared object file: No such file or directory in Unknown on line 0
[Thu Feb 27 23:35:01 2014] [error] [client 66.249.73.105] PHP Warning: PHP Startup: Unable to load dynamic library '/usr/local/lib/php/extensions/no-debug-non-zts-20100525/apc.so' - /usr/local/lib/php/extensions/no-debug-non-zts-20100525/apc.so: cannot open shared object file: No such file or directory in Unknown on line 0
[Thu Feb 27 23:35:03 2014] [error] [client 193.252.149.15] PHP Warning: PHP Startup: Unable to load dynamic library '/usr/local/lib/php/extensions/no-debug-non-zts-20100525/apc.so' - /usr/local/lib/php/extensions/no-debug-non-zts-20100525/apc.so: cannot open shared object file: No such file or directory in Unknown on line 0
[Thu Feb 27 23:35:03 2014] [error] [client 193.252.118.173] PHP Warning: PHP Startup: Unable to load dynamic library '/usr/local/lib/php/extensions/no-debug-non-zts-20100525/apc.so' - /usr/local/lib/php/extensions/no-debug-non-zts-20100525/apc.so: cannot open shared object file: No such file or directory in Unknown on line 0
[Thu Feb 27 23:35:04 2014] [error] [client 81.52.143.26] PHP Warning: PHP Startup: Unable to load dynamic library '/usr/local/lib/php/extensions/no-debug-non-zts-20100525/apc.so' - /usr/local/lib/php/extensions/no-debug-non-zts-20100525/apc.so: cannot open shared object file: No such file or directory in Unknown on line 0
[Thu Feb 27 23:35:04 2014] [error] [client 81.52.143.29] PHP Warning: PHP Startup: Unable to load dynamic library '/usr/local/lib/php/extensions/no-debug-non-zts-20100525/apc.so' - /usr/local/lib/php/extensions/no-debug-non-zts-20100525/apc.so: cannot open shared object file: No such file or directory in Unknown on line 0
[Thu Feb 27 23:35:05 2014] [error] [client 178.255.215.65] PHP Warning: PHP Startup: Unable to load dynamic library '/usr/local/lib/php/extensions/no-debug-non-zts-20100525/apc.so' - /usr/local/lib/php/extensions/no-debug-non-zts-20100525/apc.so: cannot open shared object file: No such file or directory in Unknown on line 0
[Thu Feb 27 23:35:09 2014] [error] [client 66.249.73.105] PHP Warning: PHP Startup: Unable to load dynamic library '/usr/local/lib/php/extensions/no-debug-non-zts-20100525/apc.so' - /usr/local/lib/php/extensions/no-debug-non-zts-20100525/apc.so: cannot open shared object file: No such file or directory in Unknown on line 0
[Thu Feb 27 23:35:09 2014] [notice] caught SIGTERM, shutting down

 

[NiteWave]

above logs should be generated by apache

assume you are running cPanel ... then lsws and apache will write error logs to same file: /usr/local/apache/logs/error_log

for this issue, you'd better resolve it under apache, then switch to lsws.