see also : https://confluentcommunity.slack.com/messages/C6UJNMY67/ Hello Confluent,
I followed twice the docker quickstart on: https://docs.confluent.io/current/quickstart/cos-docker-quickstart.html I used confluent CE 5.0.0.2.11 at Step 5 DESCRIBE EXTENDED pageviews_female_like_89; we got the error below. I thought maybe change java version, and tried it on openjdk and oracle java version 10 and version 8 on 2 different machines running ubuntu 18.04 Both machines have only the neccesary software to run confluent (docker, java and concfluent) Some unclosable input stream problem. --------------------------- ksql> DESCRIBE EXTENDED pageviews_female_like_89; Error reading entity from input stream. Caused by: Cannot construct instance of `io.confluent.ksql.rest.entity.SourceDescription`, problem: null at [Source: (org.glassfish.jersey.message.internal.ReaderInterceptorExecutor$UnCloseableInputStream); line: 1, column: 1110] (through reference chain: io.confluent.ksql.rest.entity.KsqlEntityList[0]->io.confluent.ksql.rest.entity.SourceDescriptionEntity["sourceDescription"]) Caused by: java.lang.NullPointerException ksql>
