Hello @Ishwari7219,
I couldn’t reproduce the issue with terraform plan state lock but @MattP had the same issue in a different post and might have some feedback. On a side note, you don’t need to run commands other than the terraform plan from notebook instructions.
Since a new lab session seems to clear all the resources after a few hours or you ask for a lab refresh for things like empty AWS console url, failed jobs, existing resources etc if you can’t progress. Thank you