Arcane importer

Hello i have trouble with Arcane importer plugin when i try to instal this plugin i always get this error – An error occurred while installing Arcane importer: The plugin does not have a valid header..

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Downloading installation package from https://www.skywarriorthemes.com/plugins/arcane-radium-one-click-demo-install-master.zip…
Unpacking the package…
Installing the plugin…
Plugin installed successfully.
Plugin activation failed.