Yesterday I changed my setting of piwik. After that I can not log into my piwik. When I log into with my account, it is always show me “Fatal error: Maximum execution time of 30 seconds exceeded in …”
So I find the way to solve this problem. And I find a wrong way to change the file “piwik.php” in “piwik/core”. I modified “max_execution_time” value to zero (max_execution_time=0) in “piwik/core/piwik.php”.
And then a new problem come out. “Unable to start session” come out. When I visit my piwik, it is always show me “Unable to start session”. So I modified “max_execution_time=0” back to “max_execution_time”. But it is not work.