Error .../libs/Zend/Db/Statement/Pdo.php

Piwik 3.0.4 reported to me that i should post this message in the forum. this is what i am doing here:
When selecting Visitors/Overview IN GERMAN VERSION i am receiving this error and NO output:

WARNING: /usr/www/users/xxxx/libs/Zend/Db/Statement/Pdo.php(228): Warning - Error while sending QUERY packet. PID=13450 - Piwik 3.0.4 - Please report this message in the Piwik forums:

Maybe look at this question:

It seems like your mysql server can’t process the request.

A post was split to a new topic: Maximum execution time of 30 seconds exceeded