W3Total Cache Memory Error

I am Getting Error On WordPress When I Activate w3 Total Cache

Fatal error: Allowed memory size of 33554432 bytes exhausted (tried to allocate 196608 bytes) in /home/vika8467/public_html/blog/wp-content/plugins/w3-total-cache/lib/W3/ConfigKeys.php on line 1329

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How do I fix this?