Updated Automatically Now Analytics Page Blank

I updated Automatically to the latest version and now the Analytics page is blank and no longer working? How do I restore or get this to work again. Did I just lose months of analytical data? Why does your updater not work?

Hi svsdnb,

It also happened to me on a 1.x to 2.6.1 upgrade. I solved the problem with a commande line :

php console core:update