Hi,
Has this issue been fixed?

I am getting the same error:

The update process is starting. This process may take a while on some hosts, so please be patient.

Enabling Maintenance mode…
Updating Theme Enfold (1/1)

Warning: preg_match() expects parameter 2 to be string, array given in /home7/idarchit/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 /home7/idarchit/public_html/wp-admin/includes/class-wp-upgrader.php on line 258

Warning: strip_tags() expects parameter 1 to be string, array given in /home7/idarchit/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 /home7/idarchit/public_html/wp-admin/includes/file.php on line 970

Warning: preg_split() expects parameter 2 to be string, array given in /home7/idarchit/public_html/wp-includes/kses.php on line 1410

Warning: strtolower() expects parameter 1 to be string, array given in /home7/idarchit/public_html/wp-includes/http.php on line 517

Warning: strtolower() expects parameter 1 to be string, array given in /home7/idarchit/public_html/wp-includes/http.php on line 517

An error occurred while updating Enfold: Download failed. A valid URL was not provided.

Disabling Maintenance mode…

All updates have been completed.