In order to avoid any possible issues while Installing Demo Content because of your server and PHP settings, we highly recommend setting up the following values in your server’s php.ini file:

• Memory Size: memory_limit = 256M
• Script execution time: max_execution_time = 300
• Number of input variables: max_input_vars = 10000
• PHP upload limit: upload_max_filesize 64M
• Connection time limit: max_input_time = 3600

If you don’t have access to the PHP configuration on your server, you can try to set this values in .htaccess file:

• php_value max_input_vars 10000 
• php_value max_execution_time 300
• php_value memory_limit 256M
• php_upload_max_filesize 64M
• php_max_input_time = 3600

You can verify your PHP configuration limits of your server by installing Host PHP Info plugin.