Oddly, there has been lately a very significant increase of 404 errors detected in Google Console Insights for some website I run.

I checked Google Analytics for that website: the URLs that give the 404 errors are displayed in the 'Home' section, under the heading 'What pages do your users visit? '.

The numerous URLs that give the 404 errors are displayed as '/[object HTMLIFrameElement]' and '/[object Window]'

Here is a screenshot from the Google Analytics homepage:

What does it mean? Is is a bot trying to reach non-existent pages?

Oddly, there has been lately a very significant increase of 404 errors detected in Google Console Insights for some website I run.

I checked Google Analytics for that website: the URLs that give the 404 errors are displayed in the 'Home' section, under the heading 'What pages do your users visit? '.

The numerous URLs that give the 404 errors are displayed as '/[object HTMLIFrameElement]' and '/[object Window]'

Here is a screenshot from the Google Analytics homepage:

What does it mean? Is is a bot trying to reach non-existent pages?

#Update

Here is a screenshot of the table displayed in Google Analytics' Site Content:

Oddly, there has been lately a very significant increase of 404 errors detected in Google Console Insights for some website I run.

I checked Google Analytics for that website: the URLs that give the 404 errors are displayed in 'Behaviour/Site Content/All pages', under the headings 'previous page path' and 'next page path'.

The numerous URLs that give the 404 errors are displayed as '/[object HTMLIFrameElement]' and '/[object Window]'

What does it mean? Is is a bot trying to reach non-existent pages?

Oddly, there has been lately a very significant increase of 404 errors detected in Google Console Insights for some website I run.

I checked Google Analytics for that website: the URLs that give the 404 errors are displayed in the 'Home' section, under the heading 'What pages do your users visit? '.

The numerous URLs that give the 404 errors are displayed as '/[object HTMLIFrameElement]' and '/[object Window]'

Here is a screenshot from the Google Analytics homepage:

What does it mean? Is is a bot trying to reach non-existent pages?