What if a plugin works on Editor but not on build?

I created a plugin as dll for speech recognition using Google Speech to text, and it worked well when running the editor. BUT when I build the project, execute the build and use the plugin, it won't work. I tried to copy the plugin into build's folder and under the folder called "[project]_data" but it's the same. Is this common on external plugins? In that case, how can I solve it?