Problem: ros robot rviz qt5 plug-in development, after the success of the compilation error * * can not find plugins to insert a library of should be * *
An error is as follows:
[ERROR] PluginlibFactory: The plugin for class 'rviz_send_goals_plugin/SendGoal failed to load. The ERROR: Could not find The library corresponding to The plugin rviz_send_goals_plugin/SendGoal. Make sure The plugin description XML file has The correct name of The library and that The libraryactually exists.

On the Internet after finding may have the following two problems:

1. The library path="lib/lib... "The second" lib "didn't add; * *

2. Package. The XML file export sticker with _rviz plugin="${prefix}/plugin_description. XML" _, * *

But after add also complains,

In addition, my library path="lib/librviz_send_goals_plugin. So" do not add suffix. So just can't find the file, I do not know why,

Ever know the bosses to give directions