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API Engine Error

I am working on an assignment in RapidMiner where I had to use the MeaningCloud sentiment analysis operator. When I attached the retrieve operator and then the sentiment analysis and tried to run it, it gave me this, "Process Failed. API Engine error: missing required parameter(s): key [200]."
I cannot find anywhere on how to fix it, and my IT help desk is closed. Any assistance would be appreciated. Thank you

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jwpfau

Hi,

MeaningCloud is a third party service used by a third party extension, have you entered your MeaningCloud license key like described on https://marketplace.rapidminer.com/UpdateServer/faces/product_details.xhtml?productId=rmx_MeaningCloud?

Greetings,
Jonas

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