Site crashes when I want to activate the plugin

I really want to use that plugin but unfortunately when I activate it I get this error. Anyone has an idea?

An error of type E_COMPILE_ERROR was caused in line 150 of the file /mnt/customers/[...]/wp-content/wp-content/plugins/advanced-post-queries/advanced-post-queries.php.Errormessage:require_once():Failedopeningrequired

The page I need help with: [log in to see the link]


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