aws-toolkit-vscode: (Rancher) SAM debug fails

Problem

I’m having trouble getting the “AWS SAM: API Gateway lambda invoke” debug config to make it to a breakpoint, using even a simple app, before throwing an error.

I set up a simple SAM application using the sam init tool. I chose the “Hello World Example” Quick Start Template using Node.js 16 with the ZIP package type. (“No” to XRay and CloudWatch.) I’m running Node.js 16.20.0. The simple app runs just fine locally using sam local start-api, but when I try to run the debug config, I get the following error:

Debugger attached.
2023-05-03T03:22:47.313Z	undefined	ERROR	Uncaught Exception 	{"errorType":"Runtime.ImportModuleError","errorMessage":"Error: Cannot find module 'app'\nRequire stack:\n- /var/runtime/index.mjs","stack":["Runtime.ImportModuleError: Error: Cannot find module 'app'","Require stack:","- /var/runtime/index.mjs","    at _loadUserApp (file:///var/runtime/index.mjs:997:17)","    at async Object.load (file:///var/runtime/index.mjs:1032:21)","    at async start (file:///var/runtime/index.mjs:1195:23)","    at async file:///var/runtime/index.mjs:1201:1"]}
Waiting for the debugger to disconnect...

My launch.json file contains the “straight out of the box” debug config and looks like this.

{
  "version": "0.2.0",
  "configurations": [
    {
      "type": "aws-sam",
      "request": "direct-invoke",
      "name": "API sam-app:HelloWorldFunction (nodejs16.x)",
      "invokeTarget": {
        "target": "api",
        "templatePath": "${workspaceFolder}/template.yaml",
        "logicalId": "HelloWorldFunction"
      },
      "api": {
        "path": "/hello",
        "httpMethod": "get",
        "payload": {
          "json": {}
        }
      },
      "lambda": {
        "runtime": "nodejs16.x"
      }
    }
  ]
}

What am I doing wrong? Thanks!

Expected behavior

The debugger should run without error, stopping at my first breakpoint.

System details (run the AWS: About Toolkit command)

• OS: Darwin arm64 22.4.0 (Ventura 13.3.1 - M1 chip)
• Visual Studio Code version: 1.77.3
• AWS Toolkit version: 1.71.0
• AWS SAM CLI: 1.82.0