Installing in a Sub Directory or Sub Domain

Hello,

Thanks for the great theme.

I am having problems trying to install in a sub directory and sub domain. When I install the Enfold theme in a sub directory or sub domain I receive the following error:

Warning: Missing argument 1 for get_post(), called in /home/leighmol/public_html/leemarine/wp-content/themes/enfold/framework/php/function-set-avia-frontend.php on line 128 and defined in /home/leighmol/public_html/leemarine/wp-includes/post.php on line 371

Warning: Missing argument 1 for get_post(), called in /home/leighmol/public_html/leemarine/wp-content/themes/enfold/framework/php/function-set-avia-frontend.php on line 128 and defined in /home/leighmol/public_html/leemarine/wp-includes/post.php on line 371

Fatal error: Call to undefined function wp_get_theme() in /home/leighmol/public_html/leemarine/wp-content/themes/enfold/framework/php/function-set-avia-frontend.php on line 1168

Other themes I install work fine however.

Could you please advise how to install into a sub directory or sub domain?

Thank you for your assistance.

Leigh