Got Kernel error and terminal frozen

Got kernel error and terminal frozen.Before working on config got kernel error and unable to open another terminal. May be it’s timed out?.

Also got this error when i try to open a new studio session:
User: arn:aws:sts::290103397316:assumed-role/voclabs/user2665686=ajay_jasti is not authorized to perform: sagemaker:CreatePresignedDomainUrl on resource: arn:aws:sagemaker:us-east-1:290103397316:user-profile/d-spcvkffm4qv0/sagemaker-user-profile-us-east-1 with an explicit deny in an identity-based policy