As of 14/06/21 this solve does not work! i tried it and got the following message: C:\Program Files\PostgreSQL\13\pgAdmin 4\bin\"C:\Program Files\PostgreSQL\13\bin\"\psql.exe' file not found. Please correct the Binary Path in the Preferences dialog
before i changed the path in the binary paths dialog window, it said something like $\Dir\..\ i dont remember exactly. -- Sent from: https://www.postgresql-archive.org/PostgreSQL-pgadmin-support-f2191615.html
