Hey there,

I'm running Matomo 3.9.1

I've found in the page title section the following line:

As a possible explanation I found https://matomo.org/faq/general/faq_74/ . So I grepped trough my access_log an searched for something without page title. As I understand the page title is the first string after the action name, so I looked for something like
[...]action_name=&idsite=[...]

But I didn't find what I was looking for. So I tried to find something inside the database, but coldn't find anything.

I assume I'm running into something like https://stackoverflow.com/questions/22869190/piwik-page-name-not-defined

Detected Site Search keyword 'ban'. NOTE: The Page URL was changed / removed, during the Site Search detection, was 'http://widgets.digitalmediacommunications.com/widget/embed/index/?p=903&k=ban', now is 'http://widgets.digitalmediacommunications.com/widget/embed/index/?p=903' Action is a SITE_SEARCH, Action name = ban, Action URL = http://widgets.digitalmediacommunications.com/widget/embed/index/?p=903
I'm think that somehow my k=ban is triggering piwik site search feature. So when I turned off site search it worked! I will reviste this issue if I choose to work with site search someday.

Actually I would guess, that there are some page titles inside the database which are NULL, 0, or something like that. When I find them I should be able to trace back the url(s) which are causing this. I just don't know where to look for it.

Can someone help me out?