I’m a non-technical beginner using PostgreSQL as my database. The database is currently empty with no tables. When I create tables, they appear in the default data source instead of the actual PostgreSQL database. After hiding the default data source display, when I try to create new tables and add column headers, I get the error: **‘Cannot read properties of undefined (reading ‘id’)’ .
Welcome @cn_xt : you would have to create tables within that external database.
Observe the plus where the external database is.
Thanks for your help, problem solved!