title: Can't query data on pgAdmin 4 but it works using psql and Python
body: <p>I have created a postgresql database on rds and I can connect and query it using psql on terminal or sqlalchemy on Python. When using pgAdmin4 I can't query or visualize the data but can create/alter tables, import data, ...</p>
  
  <p>I have also tried connecting it to Metabase and DBeaver but the connection times out.</p>
  
  <p>Any ideas why this is happening?</p>
  
  <p>I have also connected the database using pgAdmin3 and was able to visualize the data and query it, but since I am using postgresql 11.4 it is not fully supported by pgAdmin3.</p>
  
  <p>When I open the query tool on pgAdmin 4 I get this message: </p>
  
  <blockquote>
    <p>could not send data to server. Socket is not connected could not send
    startup packet: Socket is not connected.</p>
  </blockquote>