Piwik page blank after i log in

Hi guys
I was using another tracking service for my site, but I was not happy because you could only see a limited history and they were constantly bugging me to update to paid version…anyway, I found piwik, which seems like a great solution. I installed it and everything seemed to go ok.
Now when I try to go to mywebsite.com -&nbspThis website is for sale! -&nbspmywebsite Resources and Information., I can log in…but then, none of the links work.
I see Dashboard, Visitors, Actions, Referrers, Goals.
For Visitors, there is “Overview” “Visitor Log” etc. etc. I am sure you know what I am talking about.
after this row of links, the page is blank. when I click on any of these links, nothing happens.
what is going on here?
I tried deleting contents of tmp folder, I tried clearing cookies, different browsers, it’s just not working.

see Troubleshooting - Analytics Platform - Matomo