C4W2 graded external tool: can't create cluster

Hello. Stuck at the very beginning. When I run the command to create the cluster, I get the following error:

Even tried starting the lab again, to no avail:

Please help me :wink:

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The following topic by another user describes exactly the same error I get: C4W2 Graded Lab Error . Still, no one was yet able to come and give us a proper answer.

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