Attachment:
Visitor-Log.png

I cannot reproduce this issue. Can you delete all files in piwik/tmp/* and try again?

do you see any other similar problem or only the visitor log?

deleted everything in piwik/tmp/
logged out and in

=> problem remains :-(

its only in visitor log, no matter which time period is chosen

one additional comment:
If I press the button on the bottom of the page
(please see the attached imaged)
I got the good looking detail view.
Reloading the page it looks the same again...

Attachment:
button.png

problem appears in all tested browsers: ff, ie, opera

This should be fixed in master!

hmm in beta 2 it looks different but not perfect...

"Visuzalization type PiwikPluginsLiveVisitorLog not found"

please see attachement.

Attachment:
visitor-log-piwik2b2.png

Hi hpvd,

which OS and PHP version are you using?

thanks for your question.
I'm using php 5.3.3 on linux.

just tested the latest version from github master (pre 2.0b3):
looks the same like in the beginning of this ticket...
Please see attachment

Attachment:
2013-10-29_19h42_38.png

In b3b3193: refs #4221 removed some not needed use statements

In 8adffe2: refs #4221 always include VisitorLog file, maybe there is an autoloader issue

I made some more changes, can you try again using the latest version from github master?

If it still does not work, can you think of any changes you made to Piwik or php.ini? Did you disable any plugins or so? Just asking because I can still not reproduce the issue with PHP 5.3.10-1ubuntu3.7.

Can you otherwise maybe try to install another fresh Piwik and check if it still happens? And/or update your PHP version to see if it fixes the issue?

Cheers and thank you very much for helping. I'd love to fix this issue for you

@tsteur

many thanks for your work!

Just installed the latest version from master:
now it looks different: the table only shows "-"
please see the screenshot

clicking on the marked button at the button

I now got this error message:

Notice: Use of undefined constant DEBUG_BACKTRACE_IGNORE_ARGS - assumed 'DEBUG_BACKTRACE_IGNORE_ARGS' in /html/piwik/core/Log.php on line 458
There is an error. Please report the message (Piwik 2.0-b3) and full backtrace in the Piwik forums (please do a Search first as it might have been reported already!).

Notice: Use of undefined constant DEBUG_BACKTRACE_IGNORE_ARGS - assumed 'DEBUG_BACKTRACE_IGNORE_ARGS' in /html/piwik/core/Log.php on line 458

Backtrace -->

#0 Piwik\Error::errorHandler(...) called at [/html/piwik/core/Log.php:458]
#1 Piwik\Log->doLog(...) called at [/html/piwik/core/Log.php:486]
#2 Piwik\Log::log(...) called at [/html/piwik/core/Log.php:179]
#3 Piwik\Log::warning(...) called at [/html/piwik/core/Plugin/Visualization.php:74]
#4 Piwik\Plugin\Visualization->buildView(...) called at [/html/piwik/core/Plugin/ViewDataTable.php:254]
#5 Piwik\Plugin\ViewDataTable->render(...) called at [/html/piwik/core/ViewDataTable/Factory.php:123]
#6 Piwik\ViewDataTable\Factory::renderReport(...) called at [/html/piwik/plugins/Live/Controller.php:99]
#7 Piwik\Plugins\Live\Controller->getLastVisitsDetails(...) called at [:]
#8 call_user_func_array(...) called at [/html/piwik/core/FrontController.php:114]
#9 Piwik\FrontController->dispatch(...) called at [/html/piwik/index.php:56]

WARN Live06:36:38 [67225] Failed to get data from API: Trying to add two strings values in DataTable\Row::sumRowArray: '�9 ' + '�9 '

maybe it helps also for the other error..

As far as i can remember there are no changes in php ini.
I'll try updating php and/or a fresh install during the day

Attachment:
2013-10-31_07h33_14.png

Attachment:
2013-10-31_07h37_05.png

php is now updated to 5.3.27:
the table looks much better now :-)

only 4 columns, well structured and the icons show up in the right way etc

but there are some yellow error boxes in the 4th column:

here is an error. Please report the message (Piwik 2.0-b3) and full backtrace in the Piwik forums (please do a Search first as it might have been reported already!).

Warning: htmlspecialchars() [function.htmlspecialchars]: Invalid multibyte sequence in argument in /html/piwik/vendor/twig/twig/lib/Twig/Extension/Core.php on line 927

Backtrace -->

#0 Piwik\Error::errorHandler(...) called at [:]
#1 htmlspecialchars(...) called at [/html/piwik/vendor/twig/twig/lib/Twig/Extension/Core.php:927]
#2 twig_escape_filter(...) called at [/html/piwik/tmp/templates_c/57/26/f50133f3038ccbfc28e1ecc8d3b1b89982619950037a3321ccfb9c3ede32.php:268]
#3 __TwigTemplate_5726f50133f3038ccbfc28e1ecc8d3b1b89982619950037a3321ccfb9c3ede32->doDisplay(...) called at [/html/piwik/vendor/twig/twig/lib/Twig/Template.php:264]
#4 Twig_Template->displayWithErrorHandling(...) called at [/html/piwik/vendor/twig/twig/lib/Twig/Template.php:238]
#5 Twig_Template->display(...) called at [/html/piwik/tmp/templates_c/b4/a1/a35ef731cdf931ecd4994401b308abd53b13fd3c1ed013a537523891a337.php:584]
#6 __TwigTemplate_b4a1a35ef731cdf931ecd4994401b308abd53b13fd3c1ed013a537523891a337->doDisplay(...) called at [/html/piwik/vendor/twig/twig/lib/Twig/Template.php:264]
#7 Twig_Template->displayWithErrorHandling(...) called at [/html/piwik/vendor/twig/twig/lib/Twig/Template.php:238]
#8 Twig_Template->display(...) called at [/html/piwik/tmp/templates_c/f6/f4/6ed24a7d9ed3e245fa01550d6ed4e014f32f8bce916134512d56978f453c.php:117]
#9 __TwigTemplate_f6f46ed24a7d9ed3e245fa01550d6ed4e014f32f8bce916134512d56978f453c->doDisplay(...) called at [/html/piwik/vendor/twig/twig/lib/Twig/Template.php:264]
#10 Twig_Template->displayWithErrorHandling(...) called at [/html/piwik/vendor/twig/twig/lib/Twig/Template.php:238]
#11 Twig_Template->display(...) called at [/html/piwik/vendor/twig/twig/lib/Twig/Template.php:249]
#12 Twig_Template->render(...) called at [/html/piwik/vendor/twig/twig/lib/Twig/Environment.php:300]
#13 Twig_Environment->render(...) called at [/html/piwik/core/View.php:241]
#14 Piwik\View->renderTwigTemplate(...) called at [/html/piwik/core/View.php:236]
#15 Piwik\View->render(...) called at [/html/piwik/core/Plugin/ViewDataTable.php:255]
#16 Piwik\Plugin\ViewDataTable->render(...) called at [/html/piwik/core/ViewDataTable/Factory.php:123]
#17 Piwik\ViewDataTable\Factory::renderReport(...) called at [/html/piwik/plugins/Live/Controller.php:99]
#18 Piwik\Plugins\Live\Controller->getLastVisitsDetails(...) called at [/html/piwik/plugins/Live/Controller.php:93]
#19 Piwik\Plugins\Live\Controller->indexVisitorLog(...) called at [:]
#20 call_user_func_array(...) called at [/html/piwik/core/FrontController.php:114]
#21 Piwik\FrontController->dispatch(...) called at [/html/piwik/index.php:56]

Cool! That already helps us.

Can you executephp composer.phar update in your Piwik directory to get the latest Twig updates and then tell us again in which line it fails?

We don't need the backtrace. Just this message is enough:

Warning: htmlspecialchars() [function.htmlspecialchars]: Invalid multibyte sequence in argument in /html/piwik/vendor/twig/twig/lib/Twig/Extension/Core.php on line 927

Thx a lot for your help!

stupid question because I'm no programmer:
how to do "execute "php composer.phar update"" ?
Made & call a file test.php ? and put what exactly inside?

ah sorry, I thought you are maybe familiar with this. No worries, we will release another beta soon and maybe you can just use the Piwik Update feature from the UI to upgrade? That also does the trick and is easier.

Hi, FYI: beta 3 is now available

Hi, thanks for the information. I regularly copy the latest version from github master to my account, so no update was found today.
The warning line 927 still keeps the same...

your files have not updated properly, becuase the line 927 does not have such function in the 2.0-beta 3 zip, make sure all files are really overwritten

thanks for your info. So I don't do the GUI update as before (which shows "no new version") but take the file piwik-2.0-b3.zip from http://builds.piwik.org/ and put it on my server:

New Message:
There is an error. Please report the message (Piwik 2.0-b3) and full backtrace in the Piwik forums (please do a Search first as it might have been reported already!).

Warning: htmlspecialchars() [function.htmlspecialchars]: Invalid multibyte sequence in argument in /html/piwik/vendor/twig/twig/lib/Twig/Extension/Core.php on line 942

just updated to latest piwik master from github

now its:
Warning: htmlspecialchars() [function.htmlspecialchars]: Invalid multibyte sequence in argument in /html/piwik/vendor/twig/twig/lib/Twig/Extension/Core.php on line 925

Hi hvpd,

unfortunately I can still not reproduce it. There must be a text which contains for instance a not correct encoded German umlaut. Do you always get this error?

Can you maybe try the following thing:

• Open the file index.php from your Piwik installation
• In line 52, before " if (!defined('PIWIK_ENABLE_DISPATCH') || PIWIK_ENABLE_DISPATCH) {", insert the following line:

error_reporting(0);```
* Reload the visitor log
* Do you see any missing text in any of the visitors? For instance a title of a link 
 * Open```
index.php``` again and remove the previously added line 

Please let us know whether you find anything or not. Maybe you can even send us a screenshot to hello (at) piwik.org ?

put "error_reporting(0);"

the error messages are gone

with your help I could now figure out the details:

of course piwik beta is running only on a testing website so there are not that many page views..

The error only occurs in visits from last month (october)
No errors in november anymore.
Maybe these visits have been processed with an older version of piwik (I constantly updated from github)? Is there a way to "reprocess" them?

switching the error messages off I could see at the places where the pagetitles have to been shown some empty rows.

You are right: these pagetitles contain german umlauts (,,...)
visiting these sites today again: the page titles are shown correctly without any errors !!

=> seems to be solved !!!!

many thanks!!

Cool, thx for letting us know!

It is not needed to reprocess the data as the VisitorLog does not use any archived data. Also the recorded data and the data structure did not change. Probably it was a bug in a previous master version. We take this issue seriously though and I will look into the code to look for some possible causes. I will let you know if I find something!

Invalid multibyte sequence in argument in /html/piwik/vendor/twig/twig/lib/Twig/Extension/Core.php on line 927

This bug has occurred again in Piwik 2.2.2. I created ticket at #5157