Loading Plugins from Subfolders of the "Plugins" Folder

Plugins should be installed not directly in the Plugins folder, but in subfolders. For V2 and V3, both options will work, starting from V4 — only the new one.

Dumping all plugins and their associated files directly into Plugins created inconveniences in administration and conflicts between dependencies of different plugins. It has been decided to use a separate subfolder for each plugin, where, in addition to the plugin itself, there will be additional libraries, configuration files, and other files necessary for the plugin’s operation. When updating or deleting a plugin, there is less chance of leaving behind unnecessary files or accidentally deleting files of another plugin.

For backward compatibility, loading from the root of the Plugins folder will still work for plugins developed for the V2 or V3 API, but for new installations, it is recommended to use separate subfolders right away. Plugins developed for newer versions of the API will only be loaded from subfolders.

You can read more about the folder structure here.