After upgrading to 4.0.0 the SEO plugin appears to be broken quite badly, no extra php error log is given.
index.php?date=today&module=SEO&action=getRank&disableLink=0&widget=1&idSite=10101&period=day
Call to a member function getRows() on null
in core/DataTable/Renderer.php line 446
Hi @GieltjE
Thanks for the report. I'm able to reproduce that locally and will have a quick look.