Hello @akash_mernedi,
Unfortunately I couldn’t reproduce the issue and there were other learners with this issue but in a different Assignment in Course 3(post and here). It seems you are getting this output from terraform apply with EC2 Subnets and EC2 Security Group are found multiple. I suggest to submit the form and perhaps @Edmund_Koh and @Pisith_Soeun have any suggestions, if they are around. Thank you