Cant use this Theme

Hello,

after i activate the Theme i installed the required plugins , see here ;

Installing and Activating Plugin BBpress (1/4)
BBpress installed and activated successfully. Show Details.
Installing and Activating Plugin Isotope gallery (2/4)
Isotope gallery installed and activated successfully. Show Details.
Installing and Activating Plugin Paralax slider (3/4)
Paralax slider installed and activated successfully. Show Details.
Installing and Activating Plugin WooCommerce (4/4)
WooCommerce installed and activated successfully. Show Details.
All installations and activations have been completed.

After the installation i get this Message ;

Fatal error: Allowed memory size of 41943040 bytes exhausted (tried to allocate 122880 bytes) in /usr/www/users/teamju/home/wordpress/wp-content/themes/oblivion/pagebuilder/blocks/social-block.php on line 86

Please can you help me?
Sry for my bad english ^^