Zabbix agent2: Empty array in Docker Plugin

[nexus-256]

Good afternoon!
I am using a docker plugin for zabbix agent2.
Some dependent elements in the template are displayed as "unsupported" and show the error "cannot apply aggregation function to empty array" because the necessary data is missing.
For example, the "Docker: Volume size" element, which depends on the "Docker: Get data_usage" element.
Please tell me, is it possible to convert an empty value to "0" when an element receives an empty value?

[nexus-256]

I found how to do it, it turned out to be very simple.
In the "preprocessing" of the element, you need to select the value "0" in case of an error.
I hope this post will help someone.