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bugWe can reproduce the issue and confirmed it is a bug.We can reproduce the issue and confirmed it is a bug.
Description
Problem
Unable to debug an AWS SAM app using the toolkit with Podman installed. Podman works fine via SAM CLI sam local invoke.
Steps to reproduce the issue
- Install Podman Desktop 1.23.1
- Make sure Docker Compatibility is enabled and Podman is listening on Docker socket
- Setup Node Hello World project using the SAM CLI
- Open VS Code, setup launch.json using the VS Toolkit extension helper in the template.yaml
- Run Debugging
Expected behavior
SAM debugging to run without issue just like it does with Docker
System details (run AWS: About and/or Amazon Q: About)
2025-12-11 14:37:01.676 [info] Manifest file is changed (new hash: c0e83ff3ce1bd02a0c2a7c02974c24ec) or dependency folder (.aws-sam/deps/e97960d3-f967-4c11-bb67-c0f9409291db) is missing for (HelloWorldFunction), downloading dependencies and copying/building source
Building codeuri: /Users/sedenfield/Documents/Gitlab/_scratchpad/sam-pod-test/sam-app/hello-world runtime: nodejs24.x architecture: arm64 functions: HelloWorldFunction
2025-12-11 14:37:01.684 [info] Running NodejsNpmBuilder:NpmPack
2025-12-11 14:37:02.156 [info] Running NodejsNpmBuilder:CopyNpmrcAndLockfile
2025-12-11 14:37:02.156 [info] Running NodejsNpmBuilder:CopySource
2025-12-11 14:37:02.157 [info] Running NodejsNpmBuilder:NpmInstall
2025-12-11 14:37:02.772 [info] Running NodejsNpmBuilder:NpmTest
Running NodejsNpmBuilder:CleanUp
2025-12-11 14:37:02.772 [info] Running NodejsNpmBuilder:CopyDependencies
2025-12-11 14:37:02.955 [info] Running NodejsNpmBuilder:CleanUpNpmrc
Running NodejsNpmBuilder:LockfileCleanUp
2025-12-11 14:37:02.955 [info] Running NodejsNpmBuilder:LockfileCleanUp
2025-12-11 14:37:03.051 [info] Build Succeeded
2025-12-11 14:37:03.051 [info] Built Artifacts : ../../../../../../../private/tmp/aws-toolkit-vscode/vsctkb70ed838/output
Built Template : ../../../../../../../private/tmp/aws-toolkit-vscode/vsctkb70ed838/output/template.yaml
Commands you can use next
=========================
[*] Validate SAM template: sam validate
[*] Invoke Function: sam local invoke -t ../../../../../../../private/tmp/aws-toolkit-vscode/vsctkb70ed838/output/template.yaml
[*] Test Function in the Cloud: sam sync --stack-name {{stack-name}} --watch
[*] Deploy: sam deploy --guided --template-file ../../../../../../../private/tmp/aws-toolkit-vscode/vsctkb70ed838/output/template.yaml
2025-12-11 14:37:05.446 [info] Invoking app.lambdaHandler (nodejs24.x)
2025-12-11 14:37:05.459 [info] Local image was not found.
2025-12-11 14:37:05.459 [info] Removing rapid images for repo public.ecr.aws/sam/emulation-nodejs24.x
2025-12-11 14:37:05.465 [info] Building image...
2025-12-11 14:37:06.444 [info] .
2025-12-11 14:37:06.444 [info] .
2025-12-11 14:37:07.394 [info] .
2025-12-11 14:37:07.395 [info] ...
2025-12-11 14:37:07.395 [info] ...
2025-12-11 14:37:12.586 [info] .
2025-12-11 14:37:12.589 [info] .
2025-12-11 14:37:12.604 [info] .
2025-12-11 14:37:13.729 [info] .
2025-12-11 14:37:13.734 [info] .
2025-12-11 14:37:13.891 [info] .
2025-12-11 14:37:14.285 [info] .
2025-12-11 14:37:14.286 [info] .
2025-12-11 14:37:14.309 [info] ....
2025-12-11 14:37:14.314 [info]
2025-12-11 14:37:14.330 [info] Using local image: public.ecr.aws/lambda/nodejs:24-rapid-arm64.
Mounting /tmp/aws-toolkit-vscode/vsctkb70ed838/output/HelloWorldFunction as /var/task:ro,delegated, inside runtime container
2025-12-11 14:37:14.354 [info] SAM_CONTAINER_ID: dfe0744e69f1e75bbd38ba9955051649343b866f577d197ffa9f888f0ec55ef4
2025-12-11 14:37:14.577 [info] START RequestId: e141026f-03aa-44c5-a323-4438f7893d85 Version: $LATEST
2025-12-11 14:37:14.593 [info] Debugger listening on ws://0.0.0.0:5858/9321b515-bbec-4574-94eb-90a0081ca1d8
For help, see: https://nodejs.org/en/docs/inspector
2025-12-11 14:37:14.797 [info] Debugger attached.
2025-12-11 14:37:14.917 [info] 2025-12-11T22:37:14.940Z - ERROR Init Error {"errorType":"Runtime.ImportModuleError","errorMessage":"Error: Cannot find module 'app'\nRequire stack:\n- /var/runtime/index.mjs","name":"Runtime.ImportModuleError","stack":["Runtime.ImportModuleError: Error: Cannot find module 'app'","Require stack:","- /var/runtime/index.mjs"," at loadModule (file:///var/runtime/index.mjs:573:13)"," at async UserFunctionLoader.load (file:///var/runtime/index.mjs:504:20)"," at async createRuntime (file:///var/runtime/index.mjs:1217:52)"," at async ignition (file:///var/runtime/index.mjs:1633:21)"]}
2025-12-11 14:37:14.921 [info] Waiting for the debugger to disconnect...
2025-12-11 14:37:14.927 [info] node:internal/process/promises:394
triggerUncaughtException(err, true /* fromPromise */);
^
ImportModuleError [Runtime.ImportModuleError]: Error: Cannot find module 'app'
Require stack:
- /var/runtime/index.mjs
at loadModule (file:///var/runtime/index.mjs:573:13)
at async UserFunctionLoader.load (file:///var/runtime/index.mjs:504:20)
at async createRuntime (file:///var/runtime/index.mjs:1217:52)
at async ignition (file:///var/runtime/index.mjs:1633:21)
Node.js v24.11.0
2025-12-11 14:37:14.935 [info] 11 Dec 2025 22:37:14,951 [ERROR] (rapid) Init failed error=Runtime exited with error: exit status 1 InvokeID=
11 Dec 2025 22:37:14,951 [ERROR] (rapid) Invoke failed error=Runtime exited with error: exit status 1 InvokeID=e9251df1-2dab-4ba6-9928-ea5b29d59a76
11 Dec 2025 22:37:14,951 [ERROR] (rapid) Invoke DONE failed: Sandbox.Failure
2025-12-11 14:37:15.938 [info] {"errorType": "Runtime.ImportModuleError", "errorMessage": "Error: Cannot find module 'app'\nRequire stack:\n- /var/runtime/index.mjs", "trace": ["Runtime.ImportModuleError: Error: Cannot find module 'app'", "Require stack:", "- /var/runtime/index.mjs", " at loadModule (file:///var/runtime/index.mjs:573:13)", " at async UserFunctionLoader.load (file:///var/runtime/index.mjs:504:20)", " at async createRuntime (file:///var/runtime/index.mjs:1217:52)", " at async ignition (file:///var/runtime/index.mjs:1633:21)"]}
2025-12-11 14:37:15.938 [info]
2025-12-11 14:37:17.048 [info]
2025-12-11 14:37:17.048 [info] Command stopped: "sam local invoke"
Podman podman-machine-deafault.json below is what the default podman machine creates
"Created": "2025-12-11T14:35:37.929118-08:00",
"GvProxy": {
"Debug": false,
"MTU": 0,
"LogFile": "",
"PidFile": "",
"SSHPort": 0
},
"HostUser": {
"Rootful": true,
"UID": 503,
"HostUserModified": false
},
"LastUp": "0001-01-01T00:00:00Z",
"Mounts": [
{
"OriginalInput": "",
"ReadOnly": false,
"Source": "/Users",
"Tag": "a2a0ee2c717462feb1de2f5afd59de5fd2d8",
"Target": "/Users",
"Type": "virtiofs",
"VSockNumber": null
},
{
"OriginalInput": "",
"ReadOnly": false,
"Source": "/private",
"Tag": "71708eb255bc230cd7c91dd26f7667a7b938",
"Target": "/private",
"Type": "virtiofs",
"VSockNumber": null
},
{
"OriginalInput": "",
"ReadOnly": false,
"Source": "/var/folders",
"Tag": "a0bb3a2c8b0b02ba5958b0576f0d6530e104",
"Target": "/var/folders",
"Type": "virtiofs",
"VSockNumber": null
}
],
"Name": "podman-machine-default",
"Resources": {
"CPUs": 4,
"DiskSize": 93,
"Memory": 3814,
"USBs": []
},
"SSH": {
"IdentityPath": "/Users/sedenfield/.local/share/containers/podman/machine/machine",
"Port": 57727,
"RemoteUsername": "core"
},
"Version": 1,
"Swap": 0,
"ImagePath": {
"Path": "/Users/sedenfield/.local/share/containers/podman/machine/libkrun/podman-machine-default-arm64.raw"
},
"LibKrunHypervisor": {
"KRun": {
"LogLevel": "panic",
"Endpoint": "http://localhost:57780",
"BinaryPath": null,
"VirtualMachine": {
"vcpus": 4,
"memoryBytes": 3999268864,
"bootloader": {
"kind": "efiBootloader",
"efiVariableStorePath": "/Users/sedenfield/.local/share/containers/podman/machine/libkrun/efi-bl-podman-machine-default",
"createVariableStore": true
}
},
"Rosetta": false
}
},
"Starting": false,
"Rosetta": false,
"Ansible": {
"PlaybookPath": "/home/core/playbook.yaml",
"Contents": "---\n- name: Create a symbolic link for registries.conf from host to VM\n hosts: localhost\n become: true\n tasks:\n - name: Create symbolic link with sudo from the host\n command: sudo ln -s /Users/sedenfield/.config/containers/registries.conf /etc/containers/registries.conf.d/999-podman-desktop-registries-from-host.conf\n",
"User": "core"
}
}
- OS: macOS 26.1
- Visual Studio Code version: 1.107.0
- AWS Toolkit version: 3.90.0
- Amazon Q version: n/a
Thank you for taking a look.
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bugWe can reproduce the issue and confirmed it is a bug.We can reproduce the issue and confirmed it is a bug.