It seems that JobCopy-Builder-Plugin has an implied dependency on WMI Windows Agents that is deprecated. When the second will be removed in the future, the first one could stop working. The implied dependency means that the user of the plugin needs to either remove the jobcopy builder plugin or risk surprises with the removal of the WMI Windows Agents plugin.

Similar to JENKINS-70148

The jobcopy builder plugin needs a new release that requires a more modern Jenkins version. See the "Improve a Plugin" tutorial for instructions to make that change.