问题 I am using AWS SAM to build a Serverless application. I followed the instruction to build a nested application. My application structure is basically the following: . ├── MAKEFILE ├── README.md ├── __init__.py ├── apps │ ├── __init__.py │ ├── account │ │ ├── __init__.py │ │ ├── endpoints.py │ │ ├── models.py │ │ ├── requirements.txt │ │ └── template.yaml ├── samconfig.toml └── template.yaml The requirements.txt in the folder apps/account/ has the following python packages: boto3 marshmallow