"No data has been recorded yet" after adding new Site

I have 2 sites running smoothly with piwik since years. Now i added a new site and i get this message since days…
"No data has been recorded yet"
I tried to change the address of the site, of the piwik place, but no change…
Looks like there must be some communication leak. But where??
When I go into Settings i get this error:
Fatal error: Cannot redeclare class Piwik\Plugins\UserCountry\LocationProvider\DefaultProvider in /home/www/0subdomains/piwik/plugins/UserCountry/LocationProvider/Default.php on line 115
Could this be the reason?

Thanks for any help.


I am not sure if this causes your problem, but I know how to solve it:

The file [...]/piwik/plugins/UserCountry/LocationProvider/Default.php should have been deleted at some update some time ago and is now causing problems. You can simply delete it.

Thanks for this information. After deleting this default file, I got an error message with about 500 files to delete…
It is said i could delete all files using this command:

rm “/home/www/0subdomains/piwik/config/global.ini.auto-backup-before-update.php” …

Can somebody please explain me how to achieve this? I’m on a windows system.



I think some future version of Piwik will also show the Windows commands there.
But you could just replace the piwik directory with the latest version similar to here:

I already updated piwik. Now the problem seems to be that it only overrode the files and added the new ones, but didn’t delete the old ones. Therefore I have to delete all files and replace the whole installation.

But I think, that this is not the solution for my problem as the old registered sites are working without problem… It is only the new one which makes this problems.