Error updating to (4.5)

Hi,
Why do I get this error?
Best regards
Charlotte

http://www.newyorkinspiration.com
Updating Theme Enfold (1/1)
Warning: preg_match() expects parameter 2 to be string, array given in /storage/content/09/4000509/newyorkinspiration.com/public_html/wp-admin/includes/class-wp-upgrader.php on line 258 Warning: file_exists() expects parameter 1 to be a valid path, array given in /storage/content/09/4000509/newyorkinspiration.com/public_html/wp-admin/includes/class-wp-upgrader.php on line 258 Warning: strip_tags() expects parameter 1 to be string, array given in /storage/content/09/4000509/newyorkinspiration.com/public_html/wp-admin/includes/class-bulk-upgrader-skin.php on line 61 Downloading update from …
Warning: parse_url() expects parameter 1 to be string, array given in /storage/content/09/4000509/newyorkinspiration.com/public_html/wp-admin/includes/file.php on line 970 Warning: preg_split() expects parameter 2 to be string, array given in /storage/content/09/4000509/newyorkinspiration.com/public_html/wp-includes/kses.php on line 1325 Warning: strtolower() expects parameter 1 to be string, array given in /storage/content/09/4000509/newyorkinspiration.com/public_html/wp-includes/http.php on line 517 Warning: strtolower() expects parameter 1 to be string, array given in /storage/content/09/4000509/newyorkinspiration.com/public_html/wp-includes/http.php on line 517
An error occurred while updating Enfold: Download failed. A valid URL was not provided.