Fatal error in memory (4 replies)

Hello,

I just updated my Piwik to the latest version and I get this everytime I go to visitors and select any data (e.g: Data from this month).

Fatal error: Allowed memory size of 134217728 bytes exhausted (tried to allocate 8208 bytes) in /var/sites/xxx/public_html/core/DataTable.php on line 1145

How can i fix it?

Thanks!