I get this error when I try to use this plugin in calibre

[Marip302]

Hi, I've been trying to download this plugin but I always get this error on calibre:

The plugin in 'Users/maripeltola/Downloads/deACSM_0asn1crypto.zip is invalid. It does not contain a top level__init__.py file.

[Leseratte10]

You unpacked the plugin ZIP (or your OS did it for you). You need to import the calibre plugin, not the ZIP files included in it.