Server log files and instagram_dir

i found a thread concerning to this error – but the old thread is closed – so i like to know how to fix it.:
https://kriesi.at/support/topic/php-errors-in-server-log/

No such file or directory in …/class-framework-widgets.php on line 3019

I’m not a nerd who looks into the error log files every day now, but at a customer’s site I probably had a database connection error and a total failure of the site. Thereupon I looked at the log files, and had to see not only there this error. However, this had no effect on other domains.
What could be changed or will Enfold 4.4.2 soon be in sight?

i got this on my Enfold 4.4.1 on that customer installation:

$cache_dirs = scandir( $this->upload_folders['instagram_dir'] );
			if( ! is_array( $cache_dirs ) )
			{
				/**
				 * Something went wrong reading directory - folder does not exist, access denied, .....
				 * There is nothing we can do.
				 */
				return;
			}

which seems to be the original setting.

Guenter mentioned that he added :

if( ! is_dir( $this->upload_folders['instagram_dir'] ) )
			{
				return;
			}

should this behind that phrase above?
thanks