Thank you for using Amazon SageMaker Studio.
Usually this kind of error is occurred due to internal issues when trying to launch the Studio where the Sagemaker Service is trying to create default JupyterServer App on your behalf. To identify the root cause of this issue, we will need to get the details about the SageMaker Studio domain id or arn along with the user profile name on which the error was encountered. For further investigation on this issue, I'd recommend you to open a case with SageMaker Premium Support team so that you can share above mentioned details securely.
Open a support case with AWS using the link:
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