Error when opening running workflow through API call

Hi Everyone

I can’t hit my workflow through the API, as soon as I open the flow I get this error.
Anyone have any idea what this means?
Could not load workflow ‘’: channel is already closed due to channel error; protocol method: #method(reply-code=311, reply-text=Message size of 209404675 greater than allowed maximum of 104857600, class-id=0, method-id=0)

Here is the request headers:

cache-control: private,no-cache
connection: close
content-length: 318
content-type: text/plain
date: Mon, 06 Dec 2021 12:16:48 GMT
expires: Thu, 01 Jan 1970 00:00:00 GMT
knime-exception-class: com.knime.enterprise.utility.ExecutorException
server: Apache Tomcat
x-content-type-options: nosniff

Hi @tiaandp,

thanks for asking in the forum, in case others have the issue.
As discussed via mail, this is likely a bug in KNIME Server versions up to 4.11.5 and 4.12.3 that can occur if workflow calls with a lot of data are made.
We are however still investigating. I’ll send updates here for interesting findings we make.

Kind regards


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