Welcome to the community @DiogoSnows! 
{{current_page}} isn’t valid syntax. The syntax for dynamic variables is: <% current week %> (anything between <% and %> gets interpreted by the natural language processor in Logseq).
Also, it seems like you’re trying to mix simple queries with datalog ( See this query lesson (and the other lessons in the series) on how to properly write simple queries using dynamic variables.:type, :parent) which isn’t supported.