Cannot access bedrock models

I am testing the following lab

https://github.com/aws-samples/aurora-postgresql-pgvector/tree/main/02_RetrievalAugmentedGeneration/02_QuestionAnswering_Bedrock_LLMs

I got an error "ValueError: Error raised by inference endpoint: An error occurred (AccessDeniedException) when calling the InvokeModel operation: You don't have access to the model with the specified model ID." when I try streamlit run rag_app.py --server.port 8080

I am using root access also created a separate user with Bedrock full access, both failed with same error.

Please help me

Thanks.