In a MS SSAS Project creating a Data Source View over npgsql (Postgresql) visual studio 2019 gives error 42610: syntax error at or near '['

Question

there is an answered question concerning this topic more than a year ago ( In a MS SSAS Project, creating a Data Source View over Npgsql (PostgreSQL) Data Source produces 42601: syntax error at or near '[' ) I'm facing the same issue today running visual studio 2019 community on windows 10. When I create the Data Origin connection everything seems fine. However, when I try to create the Data Source View, I can choose the tables from the database but no matter what I say about the relationship between them I always get the error:" 42601 syntax error at or near '[' ". My problem is the way I use this tool, I do not write any code that can be modified. It's done by the system itself. The Data Source View is created by the wizard and as far as I know, there is no way to do it manually. Any idea about how can I overcome this error?