local development not working?

[tarasglek]

I tried deno-zip, fastapi-zip, rust-actix-web-zip/

I'm able to sam build, sam deploy, but local env does not work for me
In examples/fastapi-zip/

sam local start-api  --debug
2025-03-26 10:16:30,286 | No config file found in this directory.
2025-03-26 10:16:30,287 | OSError occurred while reading TOML file: [Errno 2] No such file or directory: '/home/taras/Downloads/aws-lambda-web-adapter/examples/fastapi-zip/samconfig.toml'
2025-03-26 10:16:30,287 | Config file location: /home/taras/Downloads/aws-lambda-web-adapter/examples/fastapi-zip/samconfig.toml
2025-03-26 10:16:30,288 | Config file '/home/taras/Downloads/aws-lambda-web-adapter/examples/fastapi-zip/samconfig.toml' does not exist
2025-03-26 10:16:30,289 | Using SAM Template at /home/taras/Downloads/aws-lambda-web-adapter/examples/fastapi-zip/.aws-sam/build/template.yaml
2025-03-26 10:16:30,297 | OSError occurred while reading TOML file: [Errno 2] No such file or directory: '/home/taras/Downloads/aws-lambda-web-adapter/examples/fastapi-zip/samconfig.toml'
2025-03-26 10:16:30,297 | Using config file: samconfig.toml, config environment: default
2025-03-26 10:16:30,298 | Expand command line arguments to:
2025-03-26 10:16:30,298 | --template_file=/home/taras/Downloads/aws-lambda-web-adapter/examples/fastapi-zip/.aws-sam/build/template.yaml --host=127.0.0.1 --port=3000 --static_dir=public
--layer_cache_basedir=/home/taras/.aws-sam/layers-pkg --container_host=localhost --container_host_interface=127.0.0.1
2025-03-26 10:16:30,342 | local start-api command is called
2025-03-26 10:16:31,358 | No Parameters detected in the template
2025-03-26 10:16:31,367 | Sam customer defined id is more priority than other IDs. Customer defined id for resource FastAPIFunction is FastAPIFunction
2025-03-26 10:16:31,367 | There is no customer defined id or cdk path defined for resource ServerlessHttpApi, so we will use the resource logical id as the resource id
2025-03-26 10:16:31,368 | 0 stacks found in the template
2025-03-26 10:16:31,368 | No Parameters detected in the template
2025-03-26 10:16:31,375 | Sam customer defined id is more priority than other IDs. Customer defined id for resource FastAPIFunction is FastAPIFunction
2025-03-26 10:16:31,375 | There is no customer defined id or cdk path defined for resource ServerlessHttpApi, so we will use the resource logical id as the resource id
2025-03-26 10:16:31,376 | 2 resources found in the stack
2025-03-26 10:16:31,376 | Found Serverless function with name='FastAPIFunction' and CodeUri='FastAPIFunction'
2025-03-26 10:16:31,376 | --base-dir is not presented, adjusting uri FastAPIFunction relative to
/home/taras/Downloads/aws-lambda-web-adapter/examples/fastapi-zip/.aws-sam/build/template.yaml
2025-03-26 10:16:31,377 | Found '1' API Events in Serverless function with name 'FastAPIFunction'
2025-03-26 10:16:31,378 | Detected Inline Swagger definition
2025-03-26 10:16:31,378 | Parsing Swagger document using 3.0 specification
2025-03-26 10:16:31,378 | Found '0' authorizers in resource 'ServerlessHttpApi'
2025-03-26 10:16:31,378 | Lambda function integration not found in Swagger document at path='$default' method='x-amazon-apigateway-any-method'
2025-03-26 10:16:31,379 | Found '0' APIs in resource 'ServerlessHttpApi'
2025-03-26 10:16:31,379 | authorizer not found or disabled, returning early
2025-03-26 10:16:31,379 | Removed duplicates from '0' Explicit APIs and '1' Implicit APIs to produce '1' APIs
2025-03-26 10:16:31,379 | 1 APIs found in the template
2025-03-26 10:16:31,381 | add catch-all route
2025-03-26 10:16:31,382 | Mounting FastAPIFunction at http://127.0.0.1:3000$default [X-AMAZON-APIGATEWAY-ANY-METHOD]
2025-03-26 10:16:31,382 | You can now browse to the above endpoints to invoke your functions. You do not need to restart/reload SAM CLI while working on your functions, changes will be
reflected instantly/automatically. If you used sam build before running local commands, you will need to re-run sam build for the changes to be picked up. You only need to restart SAM CLI
if you update your AWS SAM template
2025-03-26 10:16:31,382 | Localhost server is starting up. Multi-threading = True
2025-03-26 10:16:31,383 | Setting SIGTERM interrupt handler
2025-03-26 10:16:31 WARNING: This is a development server. Do not use it in a production deployment. Use a production WSGI server instead.
 * Running on http://127.0.0.1:3000
2025-03-26 10:16:31 Press CTRL+C to quit

curl localhost:3000
{"message":"Internal server error"}

Rest of logs from sam

2025-03-26 10:16:53,045 | Constructed Event Version 2.0 to invoke Lambda. Event: {'version': '2.0', 'routeKey': '$default', 'rawPath': '/', 'rawQueryString': '', 'cookies': [], 'headers':
{'Host': 'localhost:3000', 'User-Agent': 'curl/8.5.0', 'Accept': '*/*', 'X-Forwarded-Proto': 'http', 'X-Forwarded-Port': '3000'}, 'requestContext': {'accountId': '123456789012', 'apiId':
'1234567890', 'http': {'method': 'GET', 'path': '/', 'protocol': 'HTTP/1.1', 'sourceIp': '127.0.0.1', 'userAgent': 'Custom User Agent String'}, 'requestId':
'0074744c-2b9e-4cd9-83a0-4b7ef19a88a8', 'routeKey': '$default', 'stage': '$default', 'time': '26/Mar/2025:10:16:30 +0000', 'timeEpoch': 1742984190, 'domainName': 'localhost',
'domainPrefix': 'localhost'}, 'body': '', 'pathParameters': {}, 'stageVariables': None, 'isBase64Encoded': False}
2025-03-26 10:16:53,047 | Found one Lambda function with name 'FastAPIFunction'
2025-03-26 10:16:53,047 | Invoking run.sh (python3.12)
2025-03-26 10:16:53,047 | Loading AWS credentials from session with profile 'None'
2025-03-26 10:16:53,599 | Resolving code path. Cwd=/home/taras/Downloads/aws-lambda-web-adapter/examples/fastapi-zip/.aws-sam/build,
CodeUri=/home/taras/Downloads/aws-lambda-web-adapter/examples/fastapi-zip/.aws-sam/build/FastAPIFunction
2025-03-26 10:16:53,600 | Resolved absolute path to code is /home/taras/Downloads/aws-lambda-web-adapter/examples/fastapi-zip/.aws-sam/build/FastAPIFunction
2025-03-26 10:16:53,600 | Resolving code path. Cwd=/home/taras/Downloads/aws-lambda-web-adapter/examples/fastapi-zip/.aws-sam/build,
CodeUri=/home/taras/Downloads/aws-lambda-web-adapter/examples/fastapi-zip/.aws-sam/build/FastAPIFunction
2025-03-26 10:16:53,600 | Resolved real code path to /home/taras/Downloads/aws-lambda-web-adapter/examples/fastapi-zip/.aws-sam/build/FastAPIFunction
2025-03-26 10:16:53,601 | Code /home/taras/Downloads/aws-lambda-web-adapter/examples/fastapi-zip/.aws-sam/build/FastAPIFunction is not a zip/jar file
2025-03-26 10:16:54,225 | Cleaning all decompressed code dirs
2025-03-26 10:16:54,225 | Exception on / [GET]
Traceback (most recent call last):
  File "flask/app.py", line 1511, in wsgi_app
  File "flask/app.py", line 919, in full_dispatch_request
  File "flask/app.py", line 917, in full_dispatch_request
  File "flask/app.py", line 902, in dispatch_request
  File "samcli/local/apigw/local_apigw_service.py", line 731, in _request_handler
  File "samcli/local/apigw/local_apigw_service.py", line 619, in _invoke_lambda_function
  File "samcli/commands/local/lib/local_lambda.py", line 169, in invoke
  File "samcli/lib/telemetry/metric.py", line 325, in wrapped_func
  File "samcli/local/lambdafn/runtime.py", line 229, in invoke
  File "samcli/local/lambdafn/runtime.py", line 100, in create
  File "samcli/local/docker/lambda_container.py", line 106, in __init__
  File "samcli/local/docker/lambda_container.py", line 261, in _get_image
  File "samcli/local/docker/lambda_image.py", line 203, in build
  File "samcli/local/layers/layer_downloader.py", line 77, in download_all
  File "samcli/local/layers/layer_downloader.py", line 111, in download
  File "samcli/local/layers/layer_downloader.py", line 160, in _fetch_layer_uri
  File "samcli/local/layers/layer_downloader.py", line 141, in _fetch_layer_uri
  File "botocore/client.py", line 569, in _api_call
  File "botocore/client.py", line 1023, in _make_api_call
botocore.errorfactory.InvalidParameterValueException: An error occurred (InvalidParameterValueException) when calling the GetLayerVersion operation: Invalid Layer name:
arn:aws:lambda:us-east-1:753240598075:layer:LambdaAdapterLayerX86
2025-03-26 10:16:54,227 | Lambda execution failed (<InternalServerError '500: Internal Server Error'>,)
2025-03-26 10:16:54 127.0.0.1 - - [26/Mar/2025 10:16:54] "GET / HTTP/1.1" 502 -

sam --version
SAM CLI, version 1.135.0

Tried examples from HEAD and 0.9.0 release

[tarasglek]

Ugh, i wasted 4 hours on this until I found sam local invoke -- event events/event-sqs.json --region us-west-2 workaround in aws/aws-sam-cli#2347

This should atleast be documented with a workaround.