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Getting the same error as reported in #2732 and a similar one, in my case after enabling ecommerce tracking on 1.6.0. For me, almost all widgets on the dashboard show:
Fatal error: Class 'Piwik_CustomVariables' not found in /var/php/piwik/plugins/Goals/Goals.php on line 583
On the ecommerce goals page, I get:
I've restarted the fcgi process and apache, checked that the code is the same as in the latest.zip file and verified file permissions. Interestingly, the error goes away once I switch the period to something not including today. So, I figure something got tracked since enabling the ecommerce tracking that causes the error to show.
Two more remarks:
For a staging site where I tested the ecommerce tracking, I get a different error on the ecommerce goals page (above, I pasted the same error message twice):
Fatal error: Class 'Piwik_CustomVariables' not found in /var/php/piwik/plugins/Goals/API.php on line 292
Also, the errors are limited to the individual websites tracked. I.e. for the staging site and all others tracked by this piwik server, I still get a normal dashboard display.
Can you check that the plugin "Custom Variables" is enabled? and the files in plugins/CustomVariables/CustomVariables.php is there?
Thanks, after enabling the plugin everything's fine! I do feel embarrassed...
Don't feel embarassed, it's a bug!
We should check that Custom Variable plugin is enabled when enabling Ecommerce (maybe enable it automatically)
(In ) Fixes #2743