Cacti 1.2.14 does not show Windows 2016 Network Interface graph.

[stateoflat2018]

Hello, I'm trying to monitor Windows 2016 Server from CentOS7.8/Cacti 1.2.14(php7.4 & MySQL8).

By registering Win server to my cacti now I can monitor disk, memory, usage, loggin number and such but network interface.
According to cacti log, there are error as:

10/21/2020 14:09:36 - ERROR PHP WARNING: sizeof(): Parameter must be an array or an object that implements Countable in file: /usr/share/cacti/lib/graph_variables.php on line: 452
10/21/2020 14:09:36 - CMDPHP PHP ERROR WARNING Backtrace: (/graph.php[549]:rrdtool_function_graph(), /lib/rrd.php[1583]:variable_nth_percentile(), /lib/graph_variables.php[452]:CactiErrorHandler())
10/21/2020 14:09:36 - ERROR PHP WARNING: sizeof(): Parameter must be an array or an object that implements Countable in file: /usr/share/cacti/lib/graph_variables.php on line: 452
10/21/2020 14:09:36 - CMDPHP PHP ERROR WARNING Backtrace: (/graph.php[553]:rrdtool_function_graph(), /lib/rrd.php[1583]:variable_nth_percentile(), /lib/graph_variables.php[452]:CactiErrorHandler())
10/21/2020 14:09:36 - ERROR PHP WARNING: sizeof(): Parameter must be an array or an object that implements Countable in file: /usr/share/cacti/lib/graph_variables.php on line: 452
10/21/2020 14:09:36 - CMDPHP PHP ERROR WARNING Backtrace: (/graph.php[553]:rrdtool_function_graph(), /lib/rrd.php[1583]:variable_nth_percentile(), /lib/graph_variables.php[452]:CactiErrorHandler())

I need some help to resolve this error.
Thank you for your help in advance.

[TheWitness]

Appreciate you reporting that. Some fixes have been made as a result.

[stateoflat2018]

Hello TheWitness, thank you for checking out my post.
According to your post, fix will be included in next cacti update?

[TheWitness]

Correct 1.2.15. At least the warning will be gone. How you generated it, well, that's a bit of a mystery. We will cross that bridge once it's released.