title: debezium could not access file "decoderbufs" using postgres 11 with default plugin pgoutput
body: <p>I'm new to kafka, I'm trying to use the debezium postgres connector. 
  but even using postgres version 11 with the standard plugin I get this error:
  org.apache.kafka.connect.errors.ConnectException: org.postgresql.util.PSQLException: ERROR: could not access file "decoderbufs": No such file or directory</p>
  
  <p>To run kafka / debezium I'm using the image of the fast-data-dev docker as you can see below</p>
  
  <pre><code>  # this is our kafka cluster.
    kafka-cluster:
      image: landoop/fast-data-dev:latest
      environment:
        ADV_HOST: 127.0.0.1         # Change to 192.168.99.100 if using Docker Toolbox
        RUNTESTS: 0                 # Disable Running tests so the cluster starts faster
      ports:
        - 2181:2181                 # Zookeeper
        - 3030:3030                 # Landoop UI
        - 8081-8083:8081-8083       # REST Proxy, Schema Registry, Kafka Connect ports
        - 9581-9585:9581-9585       # JMX Ports
        - 9092:9092                 # Kafka Broker
  </code></pre>
  
  <p>after running i can open my localhost: 3030 to choose the debezium connector, i configured it this way:</p>
  
  <p><a href="https://i.stack.imgur.com/gNGJo.png" rel="noreferrer"><img src="https://i.stack.imgur.com/gNGJo.png" alt="enter image description here"></a></p>
  
  <p>and I'm using aws postgres rds in version 11.5
  I saw several tutorials using wal2json, but I didn't find it in rds.extensions and didn't see a way to add it. Anyway, as of version 10, debezium can use pgoutput and apparently no configuration is necessary.</p>
  
  <p>the rds.logical_replication property is set to 1
  when executing SHOW wal_level; in the terminal I see that it returns logical
  in the documentation says that you have to set max_wal_senders = 1 and max_replication_slots = 1
  put in the rds the minimum <code>is 5, so I left the default that</code> is 10</p>
  
  <p>I did not define the role REPLICATION because from what I understand in the rds there is no way</p>
  
  <p>in this image you can see the version used is 11.5</p>
  
  <p><a href="https://i.stack.imgur.com/QMdN8.png" rel="noreferrer"><img src="https://i.stack.imgur.com/QMdN8.png" alt="enter image description here"></a></p>
  
  <p>but I get the error as you can see below</p>
  
  <p><a href="https://i.stack.imgur.com/TO9lq.png" rel="noreferrer"><img src="https://i.stack.imgur.com/TO9lq.png" alt="enter image description here"></a></p>