After upgrade to v.3.4.1 can't access dashboard

When I had a similar issue (frontend was okay, but backend showed 5xx server error), my caching layer (APC) had some unknown issue. I resolved it by purging the old cache (by restarting php-fpm actually). Do you have any caching plugin or something similar that does caching on the server side? If yes, you may try clearing the cache.

Also, you may try to login using a different browser. Sometimes, even the browser cache works weirdly.

If the above didn’t fix the issue, try to enable WordPress error log and look for any errors while accessing the dashboard.

Hi Pothi,

thank you for the advice, but it didn’t work. The different browsers did not help. I do’t have a cashing plugin, but even if I would have, I could not get to it’s options – I do not have possibility to click on any option.
The only access I have is the FTP. Maybe something could be done from there?

As you have FTP access, you may edit the wp-config.php file and insert the following code just above That's all. Stop editing. Happy blogging.…

/**
 * This will log all errors notices and warnings to a file called debug.log in
 * wp-content only when WP_DEBUG is true. if Apache does not have write permission,
 * you may need to create the file first and set the appropriate permissions (i.e. use 666).
 */

define('WP_DEBUG', true); // or false
if (WP_DEBUG) {
  define('WP_DEBUG_LOG', true);
  define('WP_DEBUG_DISPLAY', false);
  @ini_set('display_errors',0);
}

Once you have done the above, try to log into the your site’s backend.

Now please go back to the FTP client and visit the folder named wp-content. In that directory there would be a file named debug.log that was created automatically by WordPress to log any errors. Please open that file and see, if there are any errors. Those errors may give an idea about what is blocking you to access the dashboard.

Hi Pothi,

sorry, but I had trouble to login into here.
So I followed your instructions and I have the debug.log but I don’t understand much from it. Could you have a look and tell me what should I do?

[04-Jul-2012 16:10:35] PHP Notice: load_plugin_textdomain was called with an argument that is deprecated since version 2.7 with no alternative available. in /home/content/48/8187348/html/windshieldrepairthailand/wp-includes/functions.php on line 2714
[04-Jul-2012 16:10:35] PHP Notice: register_sidebar_widget is deprecated since version 2.8! Use wp_register_sidebar_widget() instead. in /home/content/48/8187348/html/windshieldrepairthailand/wp-includes/functions.php on line 2628
[04-Jul-2012 16:10:35] PHP Notice: register_widget_control is deprecated since version 2.8! Use wp_register_widget_control() instead. in /home/content/48/8187348/html/windshieldrepairthailand/wp-includes/functions.php on line 2628
[04-Jul-2012 16:10:35] PHP Notice: register_sidebar_widget is deprecated since version 2.8! Use wp_register_sidebar_widget() instead. in /home/content/48/8187348/html/windshieldrepairthailand/wp-includes/functions.php on line 2628
[04-Jul-2012 16:10:35] PHP Notice: register_widget_control is deprecated since version 2.8! Use wp_register_widget_control() instead. in /home/content/48/8187348/html/windshieldrepairthailand/wp-includes/functions.php on line 2628
[04-Jul-2012 16:10:35] PHP Notice: add_custom_background is deprecated since version 3.4! Use add_theme_support( ‘custom-background’, $args ) instead. in /home/content/48/8187348/html/windshieldrepairthailand/wp-includes/functions.php on line 2628
[04-Jul-2012 16:10:35] PHP Notice: add_custom_image_header is deprecated since version 3.4! Use add_theme_support( ‘custom-header’, $args ) instead. in /home/content/48/8187348/html/windshieldrepairthailand/wp-includes/functions.php on line 2628
[04-Jul-2012 16:10:36] PHP Notice: Undefined index: flagVersion in /home/content/48/8187348/html/windshieldrepairthailand/wp-content/plugins/flash-album-gallery/flag.php on line 107
[04-Jul-2012 16:10:36] PHP Notice: Undefined index: statpress_action in /home/content/48/8187348/html/windshieldrepairthailand/wp-content/plugins/statpress/statpress.php on line 149
[04-Jul-2012 16:10:36] PHP Notice: Undefined offset: 1 in /home/content/48/8187348/html/windshieldrepairthailand/wp-content/plugins/statpress/statpress.php on line 1206
[04-Jul-2012 16:10:36] PHP Notice: Trying to get property of non-object in /home/content/48/8187348/html/windshieldrepairthailand/wp-content/plugins/statpress/statpress.php on line 1230
[04-Jul-2012 16:10:36] PHP Notice: Undefined index: post_type in /home/content/48/8187348/html/windshieldrepairthailand/wp-content/plugins/flash-album-gallery/flag.php on line 412
[04-Jul-2012 16:10:36] PHP Notice: load_plugin_textdomain was called with an argument that is deprecated since version 2.7 with no alternative available. in /home/content/48/8187348/html/windshieldrepairthailand/wp-includes/functions.php on line 2714
[04-Jul-2012 16:10:36] PHP Notice: register_sidebar_widget is deprecated since version 2.8! Use wp_register_sidebar_widget() instead. in /home/content/48/8187348/html/windshieldrepairthailand/wp-includes/functions.php on line 2628
[04-Jul-2012 16:10:36] PHP Notice: register_widget_control is deprecated since version 2.8! Use wp_register_widget_control() instead. in /home/content/48/8187348/html/windshieldrepairthailand/wp-includes/functions.php on line 2628
[04-Jul-2012 16:10:36] PHP Notice: register_sidebar_widget is deprecated since version 2.8! Use wp_register_sidebar_widget() instead. in /home/content/48/8187348/html/windshieldrepairthailand/wp-includes/functions.php on line 2628
[04-Jul-2012 16:10:36] PHP Notice: register_widget_control is deprecated since version 2.8! Use wp_register_widget_control() instead. in /home/content/48/8187348/html/windshieldrepairthailand/wp-includes/functions.php on line 2628
[04-Jul-2012 16:10:36] PHP Notice: add_custom_background is deprecated since version 3.4! Use add_theme_support( ‘custom-background’, $args ) instead. in /home/content/48/8187348/html/windshieldrepairthailand/wp-includes/functions.php on line 2628
[04-Jul-2012 16:10:36] PHP Notice: add_custom_image_header is deprecated since version 3.4! Use add_theme_support( ‘custom-header’, $args ) instead. in /home/content/48/8187348/html/windshieldrepairthailand/wp-includes/functions.php on line 2628
[04-Jul-2012 16:10:36] PHP Notice: Undefined index: flagVersion in /home/content/48/8187348/html/windshieldrepairthailand/wp-content/plugins/flash-album-gallery/flag.php on line 107
[04-Jul-2012 16:10:36] PHP Notice: Undefined index: statpress_action in /home/content/48/8187348/html/windshieldrepairthailand/wp-content/plugins/statpress/statpress.php on line 149
[04-Jul-2012 16:10:37] PHP Notice: rss.php is deprecated since version 3.0! Use wp-includes/class-simplepie.php instead. in /home/content/48/8187348/html/windshieldrepairthailand/wp-includes/functions.php on line 2668
[04-Jul-2012 16:10:43] PHP Notice: load_plugin_textdomain was called with an argument that is deprecated since version 2.7 with no alternative available. in /home/content/48/8187348/html/windshieldrepairthailand/wp-includes/functions.php on line 2714
[04-Jul-2012 16:10:43] PHP Notice: register_sidebar_widget is deprecated since version 2.8! Use wp_register_sidebar_widget() instead. in /home/content/48/8187348/html/windshieldrepairthailand/wp-includes/functions.php on line 2628
[04-Jul-2012 16:10:43] PHP Notice: register_widget_control is deprecated since version 2.8! Use wp_register_widget_control() instead. in /home/content/48/8187348/html/windshieldrepairthailand/wp-includes/functions.php on line 2628
[04-Jul-2012 16:10:43] PHP Notice: register_sidebar_widget is deprecated since version 2.8! Use wp_register_sidebar_widget() instead. in /home/content/48/8187348/html/windshieldrepairthailand/wp-includes/functions.php on line 2628
[04-Jul-2012 16:10:43] PHP Notice: register_widget_control is deprecated since version 2.8! Use wp_register_widget_control() instead. in /home/content/48/8187348/html/windshieldrepairthailand/wp-includes/functions.php on line 2628
[04-Jul-2012 16:10:43] PHP Notice: add_custom_background is deprecated since version 3.4! Use add_theme_support( ‘custom-background’, $args ) instead. in /home/content/48/8187348/html/windshieldrepairthailand/wp-includes/functions.php on line 2628
[04-Jul-2012 16:10:43] PHP Notice: add_custom_image_header is deprecated since version 3.4! Use add_theme_support( ‘custom-header’, $args ) instead. in /home/content/48/8187348/html/windshieldrepairthailand/wp-includes/functions.php on line 2628
[04-Jul-2012 16:10:43] PHP Notice: Undefined index: flagVersion in /home/content/48/8187348/html/windshieldrepairthailand/wp-content/plugins/flash-album-gallery/flag.php on line 107
[04-Jul-2012 16:10:43] PHP Notice: Undefined index: statpress_action in /home/content/48/8187348/html/windshieldrepairthailand/wp-content/plugins/statpress/statpress.php on line 149
[04-Jul-2012 16:10:43] PHP Warning: Cannot modify header information – headers already sent by (output started at /home/content/48/8187348/html/windshieldrepairthailand/wp-includes/functions.php:2714) in /home/content/48/8187348/html/windshieldrepairthailand/wp-login.php on line 362
[04-Jul-2012 16:10:43] PHP Warning: Cannot modify header information – headers already sent by (output started at /home/content/48/8187348/html/windshieldrepairthailand/wp-includes/functions.php:2714) in /home/content/48/8187348/html/windshieldrepairthailand/wp-login.php on line 374
[04-Jul-2012 16:10:47] PHP Notice: load_plugin_textdomain was called with an argument that is deprecated since version 2.7 with no alternative available. in /home/content/48/8187348/html/windshieldrepairthailand/wp-includes/functions.php on line 2714
[04-Jul-2012 16:10:47] PHP Notice: register_sidebar_widget is deprecated since version 2.8! Use wp_register_sidebar_widget() instead. in /home/content/48/8187348/html/windshieldrepairthailand/wp-includes/functions.php on line 2628
[04-Jul-2012 16:10:47] PHP Notice: register_widget_control is deprecated since version 2.8! Use wp_register_widget_control() instead. in /home/content/48/8187348/html/windshieldrepairthailand/wp-includes/functions.php on line 2628
[04-Jul-2012 16:10:47] PHP Notice: register_sidebar_widget is deprecated since version 2.8! Use wp_register_sidebar_widget() instead. in /home/content/48/8187348/html/windshieldrepairthailand/wp-includes/functions.php on line 2628
[04-Jul-2012 16:10:47] PHP Notice: register_widget_control is deprecated since version 2.8! Use wp_register_widget_control() instead. in /home/content/48/8187348/html/windshieldrepairthailand/wp-includes/functions.php on line 2628
[04-Jul-2012 16:10:47] PHP Notice: add_custom_background is deprecated since version 3.4! Use add_theme_support( ‘custom-background’, $args ) instead. in /home/content/48/8187348/html/windshieldrepairthailand/wp-includes/functions.php on line 2628
[04-Jul-2012 16:10:47] PHP Notice: add_custom_image_header is deprecated since version 3.4! Use add_theme_support( ‘custom-header’, $args ) instead. in /home/content/48/8187348/html/windshieldrepairthailand/wp-includes/functions.php on line 2628
[04-Jul-2012 16:10:47] PHP Notice: Undefined index: flagVersion in /home/content/48/8187348/html/windshieldrepairthailand/wp-content/plugins/flash-album-gallery/flag.php on line 107
[04-Jul-2012 16:10:47] PHP Notice: Undefined index: statpress_action in /home/content/48/8187348/html/windshieldrepairthailand/wp-content/plugins/statpress/statpress.php on line 149
[04-Jul-2012 16:10:47] PHP Warning: Cannot modify header information – headers already sent by (output started at /home/content/48/8187348/html/windshieldrepairthailand/wp-includes/functions.php:2714) in /home/content/48/8187348/html/windshieldrepairthailand/wp-login.php on line 362
[04-Jul-2012 16:10:47] PHP Warning: Cannot modify header information – headers already sent by (output started at /home/content/48/8187348/html/windshieldrepairthailand/wp-includes/functions.php:2714) in /home/content/48/8187348/html/windshieldrepairthailand/wp-login.php on line 374
[04-Jul-2012 16:10:47] PHP Warning: Cannot modify header information – headers already sent by (output started at /home/content/48/8187348/html/windshieldrepairthailand/wp-includes/functions.php:2714) in /home/content/48/8187348/html/windshieldrepairthailand/wp-includes/pluggable.php on line 680
[04-Jul-2012 16:10:47] PHP Warning: Cannot modify header information – headers already sent by (output started at /home/content/48/8187348/html/windshieldrepairthailand/wp-includes/functions.php:2714) in /home/content/48/8187348/html/windshieldrepairthailand/wp-includes/pluggable.php on line 681
[04-Jul-2012 16:10:47] PHP Warning: Cannot modify header information – headers already sent by (output started at /home/content/48/8187348/html/windshieldrepairthailand/wp-includes/functions.php:2714) in /home/content/48/8187348/html/windshieldrepairthailand/wp-includes/pluggable.php on line 682
[04-Jul-2012 16:10:47] PHP Warning: Cannot modify header information – headers already sent by (output started at /home/content/48/8187348/html/windshieldrepairthailand/wp-includes/functions.php:2714) in /home/content/48/8187348/html/windshieldrepairthailand/wp-includes/pluggable.php on line 881

Thanks

Hi Tomas,

It looks like an issue could be with the theme (from what I see). So, you may consider upgrading your theme (manually, of course) to the latest version (2.2.9). For even better compatibility, consider moving to Weaver II. Please let me quote what the theme author says here…

This version on Weaver is essentially OBSOLETE. Now, a new, even better version, called Weaver II, is available.

Also you may want to remove the sitename from your debug.log above (you can edit your post for up to 60 minutes from the time of submission). Exposing the sitename is okay, as long as you run the latest version of the theme, plugins and the WordPress core.

Please always remember to backup both the files and the database before making any important change in your blog.

Hope this helps.

Hi Pothi,

thank you for all your time and help. The problem is solved on some very interesting way.
It might be helpful if I explain a bit what I did.
I recalled, that the problem arrised in the same moment as the ugrade installation was in progress. So I tought that there was the main problem.
I have my website hosted by GoDaddy and in applications panel I have seen that my wordpress is not upgraded. So I clicked to upgrade it from outside (I guess is same as to upgrade WP manualy).
Guess what. Everything works perfect again.
Hope it may help others.

Once again Pothi, Thank you very much.

Glad to know it worked and thanks for sharing the info on how you fixed it.