Error when installing both Marketpress and Membership plugin

Fatal error: Allowed memory size of 67108864 bytes exhausted (tried to allocate 76 bytes) in /home/upcoming/public_html/wp-includes/widgets.php on line 816

Get error when trying to install both MarketPress eCommerce and Membership plugin

And inside FTP I can't see the plugin files for these 2, to delete :disappointed:

Site is Blank :slight_frown: