A fatal error occurred - pluhin CoreVisualizations - please help

Support & Bugs
1

We are using the Piwik version v2.16.4 and can’t upgrade to latest,

Can someone please help to fix this issue in v2.16.4

Error:
A fatal error occurred
The following error just broke Piwik (v2.16.4):

Class Piwik\Plugins\CoreVisualizations\Visualizations\Sparklines contains 1 abstract method and must therefore be declared abstract or implement the remaining methods (Piwik\Plugin\ViewDataTable::buildView)
in
/public/plugins/CoreVisualizations/Visualizations/Sparklines.php line 0

2

I don’t know what could be causing this.

Maybe try out a manual update. It can also help to at first update to the latest 2.x version (2.17.1) from https://builds.piwik.org/