Unable to load workflows after updating KNIME Server and its executor

Hi @rahul_kumar,

We had the same issue and we could fix it. We are not sure how exactly it got fixed but here is what I can share with you:
The main issue is:

AMQP Connection 127.0.0.1:5672 :  : RabbitMQHandler :  :  : Couldn't connect to message queue, retry to connect in 10000ms
java.net.ConnectException: Connection refused (Connection refused)

Which makes sense as that’s how the server and executor are communicating:

What we did was check to see if anything was listening on the default port rabbitmq uses (5672)
Then checked to see what process is running.

If there wasn’t anything listening on 5672 that would be the first problem (rabbitmq not starting)

And if there was something like in our case try and make sure it was what we expect.

Our guess is when there was an error, rabbitmq wasn’t running and there may be a race condition of the executor starting too quick.

:blush:

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