Autoload error

Module 'Amasty_CompositeProductPriceIndexer' from '/var/www/vhosts/webdivino.plumadev.com/httpdocs/app/code/Amasty/CompositeProductPriceIndexer' has been already defined in '/var/www/vhosts/webdivino.plumadev.com/httpdocs/vendor/amasty/module-composite-product-price-indexer'.