Error installing plugins

[nadinesoysa]

Hi, I’ve created a new WP site, and have installed the Unicon theme successfully. I’m getting the following error when trying to install these three required plugins. Are you able to help here?
– Unicon Portfolio CPT
– WPBakery Visual Composer
– Revolution Slider

Installing Plugin: WPBakery Visual Composer
Downloading install package from http://mynicethings.co.nz/wp-content/themes/unicon/framework/plugins/js_composer.zip…

Unpacking the package…

The package could not be installed. PCLZIP_ERR_BAD_FORMAT (-10) : Unable to find End of Central Dir Record signature

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