Your PHP is configured to stop running a script after some time, generally 30 seconds. When Matomo (Piwik) is used on a websites with few thousands visits per day, then this limit might not be high enough. To fix this, modify in your php.ini the max_execution_time value to zero (which means no time limit):

max_execution_time = 0

This will ensure that Matomo (Piwik) always has enough time to process your analytics reports.

Any questions?

Many answers and more information about Matomo you can find here:

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