entities gallery for elgg 5.0.6 needs dropzonejs_api

I installed Elgg 5.0.6 on my localhost without dislaying any error. It works fine. I tried to add eGalleries and installed it without any error. But when I try to activate it displayed  a warning " requires plugin "dropezonejs_api" plugin to be activated" in red. I made reseach on elgg to find a related plugin but I couldn't. I need your urgent help.