Blank Dashboard 1.4

Support & Bugs
1

Hi,

I have updated my installation of Piwik when the update notification came through and all went well. I have now been using 1.4 for a while without any glitches.

Today the dashboard has decided to call it quits. It loads the page up to the “Widgets” drop down and then a blank page. The source shows that there was “Oops! An error has occurred.”

The websites tab is update and I can see that the stats are getting updated.

I ran the cron job and it went through perfectly. I dumped browser cache and deleted the tmp/assets and tmp/template_c contents but still no luck.

The other tabs work fine and I am getting all the graphs, data but the dashboard just does not work :frowning:

Would appreciate any help!

Shafeeq

2

Look in your webserver error logs, there should be something?

3

Hi Matt,

Apache Log shows


<br /><br />Backtrace --><div style="font-family:Courier;font-size:10pt">#0  Piwik_ErrorHandler(2, Division by zero, /var/www/piwik/core/Visualization/Chart/VerticalBar.php, 65, Array ([dataSetsToDisplay] => Array ([0] => nb_visits),[dataSetToDisplay] => nb_visits,[bar] => bar_filled Object ([type] => bar_filled,[colour] => #3B5AA9,[outline-colour] => #063E7E,[alpha] => 0.5,[text] => Visits,[font-size] => 12,[tip] => #val# #key#),[yValues] => Array ([0] => 0,[1] => 0,[2] => 0,[3] => 0,[4] => 0,[5] => 0,[6] => 0,[7] => 0,[8] => 0,[9] => 0),[labelName] => Visits,[unit] => ,[barValues] => Array ([0] => bar_value Object ([top] => 0,[tip] => 0h<br><b>0</b> Visits (0%)),[1] => bar_value Object ([top] => 0,[tip] => 1h<br><b>0</b> Visits (0%)),[2] => bar_value Object ([top] => 0,[tip] => 2h<br><b>0</b> Visits (0%)),[3] => bar_value Object ([top] => 0,[tip] => 3h<br><b>0</b> Visits (0%)),[4] => bar_value Object ([top] => 0,[tip] => 4h<br><b>0</b> Visits (0%)),[5] => bar_value Object ([top] => 0,[tip] => 5h<br><b>0</b> Visits (0%)),[6] => bar_value Object ([top] => 0...#1  Piwik_Visualization_Chart_VerticalBar->customizeChartProperties() called at [/var/www/piwik/core/ViewDataTable/GenerateGraphData.php:127]#2  Piwik_ViewDataTable_GenerateGraphData->main() called at [/var/www/piwik/core/Controller.php:146]#3  Piwik_Controller->renderView(Piwik_ViewDataTable_GenerateGraphData_ChartVerticalBar Object ([] => 24,[] => ,[] => 1,[] => ,[] => 1,[] => Array ([hideFutureHoursWhenToday] => 1,[filter_sort_column] => label,[filter_sort_order] => asc,[filter_limit] => ,[disable_queued_filters] => 1),[] => Array ([show_goals] => 1,[show_search] => ,[show_table] => 1,[show_table_all_columns] => 1,[show_all_views_icons] => 1,[show_export_as_image_icon] => ,[show_export_as_rss_feed] => 1,[show_exclude_low_population] => ,[show_offset_information] => ,[show_pagination_control] => ,[show_footer] => 1,[show_footer_icons] => 1,[apiMethodToRequestDataTable] => VisitTime.getVisitInformationPerServerTime,[uniqueId] => VisitTimegetVisitInformationPerServerTime),[] => 0,[] => Piwik_DataTable Object ([] => Array ([0] => Piwik_DataTable_Row Object ([c] => Array ([0] => Array ([label] => 0h,[nb_visits] => 0),[1] => Array (),[3] => )),[1] => Piwik_DataTable_Row Object ([c] => Array ([0] => Array ([label] => 1h,[nb_v...#4  Piwik_VisitTime_Controller->getVisitInformationPerServerTime()#5  call_user_func_array(Array ([0] => Piwik_VisitTime_Controller Object ([] => VisitTime,[] => 2011-05-09,[] => Piwik_Date Object ([] => 1304932300,[] => UTC),[] => 3,[] => Piwik_Site Object ([] => 3)),[1] => getVisitInformationPerServerTime), Array ()) called at [/var/www/piwik/core/FrontController.php:127]#6  Piwik_FrontController->dispatch(VisitTime, getVisitInformationPerServerTime, Array ()) called at [/var/www/piwik/core/FrontController.php:147]#7  Piwik_FrontController->fetchDispatch(VisitTime, getVisitInformationPerServerTime, Array ()) called at [/var/www/piwik/core/ViewDataTable/GenerateGraphHTML.php:150]#8  Piwik_ViewDataTable_GenerateGraphHTML->getFlashData() called at [/var/www/piwik/core/ViewDataTable/GenerateGraphHTML.php:116]#9  Piwik_ViewDataTable_GenerateGraphHTML->buildView() called at [/var/www/piwik/core/ViewDataTable/GenerateGraphHTML.php:90]#10 Piwik_ViewDataTable_GenerateGraphHTML->main() called at [/var/www/piwik/core/Controller.php:146]#11 Piwik_Controller->renderView(Piwik_ViewDataTable_GenerateGraphHTML_ChartVerticalBar Object ([] => 100%,[] => 250,[] => standard,[] => CoreHome/templates/graph.tpl,[] => 1,[] => Array ([hideFutureHoursWhenToday] => 1,[filter_sort_column] => label,[filter_sort_order] => asc,[filter_limit] => 24),[] => Array ([show_goals] => 1,[show_search] => ,[show_table] => 1,[show_table_all_columns] => 1,[show_all_views_icons] => 1,[show_export_as_image_icon] => 1,[show_export_as_rss_feed] => 1,[show_exclude_low_population] => ,[show_offset_information] => ,[show_pagination_control] => ,[show_footer] => 1,[show_footer_icons] => 1,[apiMethodToRequestDataTable] => VisitTime.getVisitInformationPerServerTime,[uniqueId] => VisitTimegetVisitInformationPerServerTime),[] => 0,[] => ,[] => Array (),[] => Array (),[] => getVisitInformationPerServerTime,[] => VisitTime,[] => ,[] => VisitTime.getVisitInformationPerServerTime,[] => ,[] => Array ([nb_visits] => Visits,[nb_uniq_visitors] => Unique visitors,[nb_a...#12 Piwik_VisitTime_Controller->getVisitInformationPerServerTime()#13 call_user_func_array(Array ([0] => Piwik_VisitTime_Controller Object ([] => VisitTime,[] => 2011-05-09,[] => Piwik_Date Object ([] => 1304932300,[] => UTC),[] => 3,[] => Piwik_Site Object ([] => 3)),[1] => getVisitInformationPerServerTime), Array ()) called at [/var/www/piwik/core/FrontController.php:127]#14 Piwik_FrontController->dispatch() called at [/var/www/piwik/index.php:58]</div><br />
	    <strong>There is an error. Please report the message and full backtrace in the <a href='?module=Proxy&action=redirect&url=http://forum.piwik.org' target='_blank'>Piwik forums</a> (please do a Search first as it might have been reported already!).<br /><br/>
	    Warning:</strong> <i>Division by zero</i> in <b>/var/www/piwik/core/Visualization/Chart/VerticalBar.php</b> on line <b>65</b>

Thanks for any help!

4

Try this patch http://dev.piwik.org/trac/changeset/4616

5

Thank you Matt!

But this did not help :frowning: I still have a blank page after the Widgets drop down. The Widgets dialog is also empty.

I am attaching screen shots if this will help…

Shafeeq

6

What do you see in your error log after applying the patch?

7

No errors in the Apache logs any more…

8

Hi Matt,

Should I check something else?

Then only change to my server systems is the introduction of memcached — would that be causing this problem?

Thanks!
Shafeeq

9

Did it involve rebuilding php and/or enabling opcode caching?

10

I enabled CURL in PHP.

To eliminate issues with the installation, I downloaded a fresh copy of “latest.zip” - same problem.

I moved the installation to another server which does not have memcached - same problem :frowning:

Shafeeq

11

I found the solution : the issue was to do with a corrupted dashboard layout. I created a new user and copied layout field content.

Viola!