[wp-trac] [WordPress Trac] #27974: Unable to Log In, Cookies Are Blocked Due To Unexpected Output

[WordPress Trac]

#27974: Unable to Log In, Cookies Are Blocked Due To Unexpected Output
------------------------------------+----------------------
 Reporter:  dejong1968              |       Owner:
     Type:  defect (bug)            |      Status:  closed
 Priority:  normal                  |   Milestone:
Component:  Login and Registration  |     Version:  3.9
 Severity:  critical                |  Resolution:  invalid
 Keywords:  close                   |     Focuses:
------------------------------------+----------------------
Changes (by katromanoff):

 * severity:  major => critical


Comment:

 Seeing you're the master at solving this issues, maybe you could spare
 some time to help me as well :)
 I am unable to log in after using the Duplicator Plugin to migrate my
 localhost to webhost.
 Everything goes well until I try to sign back in to Wordpress, and the
 cookie issue arrises.
 Here's what I get:
 Warning: Cannot modify header information - headers already sent by
 (output started at
 /data/20/4/135/98/4461098/user/5291026/htdocs/installer.php:1951) in
 /data/20/4/135/98/4461098/user/5291026/htdocs/wp-login.php on line 387

 Warning: Cannot modify header information - headers already sent by
 (output started at
 /data/20/4/135/98/4461098/user/5291026/htdocs/installer.php:1951) in
 /data/20/4/135/98/4461098/user/5291026/htdocs/wp-login.php on line 400

 Warning: Cannot modify header information - headers already sent by
 (output started at
 /data/20/4/135/98/4461098/user/5291026/htdocs/installer.php:1951) in
 /data/20/4/135/98/4461098/user/5291026/htdocs/wp-includes/pluggable.php on
 line 977

 Warning: Cannot modify header information - headers already sent by
 (output started at
 /data/20/4/135/98/4461098/user/5291026/htdocs/installer.php:1951) in
 /data/20/4/135/98/4461098/user/5291026/htdocs/wp-includes/pluggable.php on
 line 978

 Warning: Cannot modify header information - headers already sent by
 (output started at
 /data/20/4/135/98/4461098/user/5291026/htdocs/installer.php:1951) in
 /data/20/4/135/98/4461098/user/5291026/htdocs/wp-includes/pluggable.php on
 line 979

 Warning: Cannot modify header information - headers already sent by
 (output started at
 /data/20/4/135/98/4461098/user/5291026/htdocs/installer.php:1951) in
 /data/20/4/135/98/4461098/user/5291026/htdocs/wp-includes/pluggable.php on
 line 980

 and so on.

 So I opened the installer.php:1951 and this is what I see:

           color:#B94A48 !important;
           background-color:#F2DEDE !important;
           border:1px solid #EED3D7 !important;
         }
         ul.parsley-error-list {margin:1px 0 0 -40px; list-style-type:none;
 font-size:10px}
 </style>
         <?php
         // Exit if accessed directly
         if (! defined('DUPLICATOR_INIT')) {
                 $_baseURL =  strlen($_SERVER['SERVER_NAME']) ?
 $_SERVER['SERVER_NAME'] : $_SERVER['HTTP_HOST'];
                 $_baseURL =  "http://" . $_baseURL;
                 header("HTTP/1.1 301 Moved Permanently");
                 header("Location: $_baseURL");
                 exit;
         }
 ?>
 <!-- ========================================
 JQUERY ASSETS -->




 Replying to [comment:24 SergeyBiryukov]:
 > Replying to [comment:23 jesserhys]:
 > > im still not sure what the error is with line 13, any help would be
 much appreciated!
 >
 > There should be no `?> <?php` sequence in lines 11—13:
 > {{{
 > global $optimizer;
 >
 > function optimizer_pagination($navigation='numbered', $query='') { ?>
 > }}}
 >
 > Looks like the issue is caused by the
 [https://wordpress.org/themes/optimizer/ Optimizer] theme and should be
 reported to the theme author.

--
Ticket URL: <https://core.trac.wordpress.org/ticket/27974#comment:26>
WordPress Trac <https://core.trac.wordpress.org/>
WordPress publishing platform