Remote Debugger crash: TypeError: Cannot read property 'Threads' of undefined #126

DonJayamanne · 2017-11-13T23:04:33Z

From @balsoft on June 3, 2017 14:45

Environment data

VS Code version: 1.12.2
Python Extension version: 0.6.4
Python Version: 3.6
OS and version: Arch Linux x86_64, Latest (All packages up-to-date)

Actual behavior

Remote debugger crashes when I try to attach it to remote app.
Message from devConsole:

Expected behavior

Remote debugger attaches

Steps to reproduce:

Create a simple script on one Linux device (Ubuntu Linux 16.04 x86_64, Python3, ptvsd installed)

import ptvsd
ptvsd.enable_attach("secret", address=('0.0.0.0', 4000))

# Wait for debugger
ptvsd.wait_for_attach()

Run it
Switch to another Linux device (Arch Linux x86_64, Latest, ptvsd installed, VS Code Installed)
Run VS Code, open the same script locally, debug with "Attach (Remote Debug)"
Debugger crashes

Settings

Your launch.json (if dealing with debugger issues):

{
    "version": "0.2.0",
    "configurations": [
        {
            "name": "Attach (Remote Debug)",
            "type": "python",
            "request": "attach",
            "localRoot": "${workspaceRoot}",
            "remoteRoot": "/home/balsoft/Documents/",
            "port": 4000,
            "secret": "secret",
            "host": "192.168.1.67"
        }
    ]
}

Your settings.json:

{
    "window.zoomLevel": 0,
    "files.autoSave": "onFocusChange",
    "debug.inlineValues": true,
    "debug.hideActionBar": false,
    "workbench.colorTheme": "One Dark Pro",
    "auto-close-tag.enableAutoCloseTag": false,
    "auto-close-tag.SublimeText3Mode": true
}

Logs

Output from Python output panel

##########Linting Output - pylint##########
************* Module test
1,0,convention,C0111:Missing module docstring

---------------------------------------------------------------------
Your code has been rated at 6.67/10 (previous run: -13.33/10, +20.00)


No config file found, using default configuration

Output from Console window (Help->Developer Tools menu)

TypeError: Cannot read property 'Threads' of undefined
    at PythonDebugger.threadsRequest (/home/balsoft/.vscode/extensions/donjayamanne.python-0.6.4/out/client/debugger/Main.js:340:27)
    at PythonDebugger.DebugSession.dispatchRequest (/home/balsoft/.vscode/extensions/donjayamanne.python-0.6.4/node_modules/vscode-debugadapter/lib/debugSession.js:427:22)
    at PythonDebugger.ProtocolServer._handleData (/home/balsoft/.vscode/extensions/donjayamanne.python-0.6.4/node_modules/vscode-debugadapter/lib/protocol.js:104:38)
    at Socket.<anonymous> (/home/balsoft/.vscode/extensions/donjayamanne.python-0.6.4/node_modules/vscode-debugadapter/lib/protocol.js:24:60)
    at emitOne (events.js:96:13)
    at Socket.emit (events.js:188:7)
    at readableAddChunk (_stream_readable.js:176:18)
    at Socket.Readable.push (_stream_readable.js:134:10)
    at Pipe.onread (net.js:551:20): Error: TypeError: Cannot read property 'Threads' of undefined
    at PythonDebugger.threadsRequest (/home/balsoft/.vscode/extensions/donjayamanne.python-0.6.4/out/client/debugger/Main.js:340:27)
    at PythonDebugger.DebugSession.dispatchRequest (/home/balsoft/.vscode/extensions/donjayamanne.python-0.6.4/node_modules/vscode-debugadapter/lib/debugSession.js:427:22)
    at PythonDebugger.ProtocolServer._handleData (/home/balsoft/.vscode/extensions/donjayamanne.python-0.6.4/node_modules/vscode-debugadapter/lib/protocol.js:104:38)
    at Socket.<anonymous> (/home/balsoft/.vscode/extensions/donjayamanne.python-0.6.4/node_modules/vscode-debugadapter/lib/protocol.js:24:60)
    at emitOne (events.js:96:13)
    at Socket.emit (events.js:188:7)
    at readableAddChunk (_stream_readable.js:176:18)
    at Socket.Readable.push (_stream_readable.js:134:10)
    at Pipe.onread (net.js:551:20)
    at file:////opt/visual-studio-code/resources/app/out/vs/workbench/electron-browser/workbench.main.js:28:2217016
    at Object.v [as _notify] (file:////opt/visual-studio-code/resources/app/out/vs/workbench/electron-browser/workbench.main.js:28:68877)
    at Object.enter (file:////opt/visual-studio-code/resources/app/out/vs/workbench/electron-browser/workbench.main.js:28:72378)
    at n.Class.derive._oncancel._run (file:////opt/visual-studio-code/resources/app/out/vs/workbench/electron-browser/workbench.main.js:28:73699)
    at n.Class.derive._oncancel._error (file:////opt/visual-studio-code/resources/app/out/vs/workbench/electron-browser/workbench.main.js:28:73216)
    at file:////opt/visual-studio-code/resources/app/out/vs/workbench/electron-browser/workbench.main.js:28:1952866
    at g.e.dispatch (file:////opt/visual-studio-code/resources/app/out/vs/workbench/electron-browser/workbench.main.js:28:1954217)
    at g.e.handleData (file:////opt/visual-studio-code/resources/app/out/vs/workbench/electron-browser/workbench.main.js:28:1953725)
    at Socket.<anonymous> (file:////opt/visual-studio-code/resources/app/out/vs/workbench/electron-browser/workbench.main.js:28:1952726)
    at emitOne (events.js:96:13)

Note

If I don't run my script on remote device and attempt to start remote debugger it fails as expected (ECONNREFUSED), so it's almost definetly a bug in debugger.

Copied from original issue: DonJayamanne/pythonVSCode#999

The text was updated successfully, but these errors were encountered:

DonJayamanne · 2017-11-13T23:04:34Z

Please try using ptvsd 3.0.0 (temporary solution)

DonJayamanne · 2017-11-13T23:04:35Z

From @d4tech on June 21, 2017 8:31

The issue still persists even after using ptvsd 3.0.0.

DonJayamanne · 2017-11-13T23:04:35Z

From @mooperd on July 18, 2017 8:18

+1

DonJayamanne · 2017-11-13T23:04:35Z

From @woutor on July 28, 2017 22:3

For those using Django, try to run with the --nothreading argument:

python manage.py runserver 0.0.0.0:8000 --noreload --nothreading

DonJayamanne · 2017-11-13T23:04:36Z

From @moeenz on August 11, 2017 18:17

Apparently there's an issue with port numbers. I changed it from 3xxx to 9xxx and everything's working fine.

DonJayamanne · 2017-11-13T23:04:36Z

@balsoft are you still experiencing this issue.

DonJayamanne · 2017-11-13T23:04:37Z

From @waleedka on October 16, 2017 0:51

I'm experiencing this issue as well while trying to debug a python script inside a Docker container. I tried using ptvsd 3.0.0 as recommended in one of the comments above but that didn't make a difference.

VS Code version: 1.17.1
Python Extension version: 0.7.0
Python Version: 3.5.2
OS and version: OSX 10.11.6

launch.json

        {
            "name": "Attach (Remote Debug)",
            "type": "python",
            "request": "attach",
            "localRoot": "${workspaceRoot}",
            "remoteRoot": "${workspaceRoot}",
            "port": 3000,
            "secret": "some secret",
            "host": "localhost"
        }

Developer Tools Log:

TypeError: Cannot read property 'Threads' of undefined
    at PythonDebugger.threadsRequest (/Users/waleed/.vscode/extensions/donjayamanne.python-0.7.0/out/client/debugger/Main.js:364:27)
    at PythonDebugger.DebugSession.dispatchRequest (/Users/waleed/.vscode/extensions/donjayamanne.python-0.7.0/node_modules/vscode-debugadapter/lib/debugSession.js:427:22)
    at PythonDebugger.ProtocolServer._handleData (/Users/waleed/.vscode/extensions/donjayamanne.python-0.7.0/node_modules/vscode-debugadapter/lib/protocol.js:104:38)
    at Socket.<anonymous> (/Users/waleed/.vscode/extensions/donjayamanne.python-0.7.0/node_modules/vscode-debugadapter/lib/protocol.js:24:60)
    at emitOne (events.js:96:13)
    at Socket.emit (events.js:191:7)
    at readableAddChunk (_stream_readable.js:178:18)
    at Socket.Readable.push (_stream_readable.js:136:10)
    at Pipe.onread (net.js:560:20): Error: TypeError: Cannot read property 'Threads' of undefined
    at PythonDebugger.threadsRequest (/Users/waleed/.vscode/extensions/donjayamanne.python-0.7.0/out/client/debugger/Main.js:364:27)
    at PythonDebugger.DebugSession.dispatchRequest (/Users/waleed/.vscode/extensions/donjayamanne.python-0.7.0/node_modules/vscode-debugadapter/lib/debugSession.js:427:22)
    at PythonDebugger.ProtocolServer._handleData (/Users/waleed/.vscode/extensions/donjayamanne.python-0.7.0/node_modules/vscode-debugadapter/lib/protocol.js:104:38)
    at Socket.<anonymous> (/Users/waleed/.vscode/extensions/donjayamanne.python-0.7.0/node_modules/vscode-debugadapter/lib/protocol.js:24:60)
    at emitOne (events.js:96:13)
    at Socket.emit (events.js:191:7)
    at readableAddChunk (_stream_readable.js:178:18)
    at Socket.Readable.push (_stream_readable.js:136:10)
    at Pipe.onread (net.js:560:20)
    at file:///Applications/Visual Studio Code.app/Contents/Resources/app/out/vs/workbench/workbench.main.js:28:2241540
    at Object.v [as _notify] (file:///Applications/Visual Studio Code.app/Contents/Resources/app/out/vs/workbench/workbench.main.js:28:54141)
    at Object.enter (file:///Applications/Visual Studio Code.app/Contents/Resources/app/out/vs/workbench/workbench.main.js:28:57633)
    at n.Class.derive._oncancel._run (file:///Applications/Visual Studio Code.app/Contents/Resources/app/out/vs/workbench/workbench.main.js:28:58954)
    at n.Class.derive._oncancel._error (file:///Applications/Visual Studio Code.app/Contents/Resources/app/out/vs/workbench/workbench.main.js:28:58471)
    at file:///Applications/Visual Studio Code.app/Contents/Resources/app/out/vs/workbench/workbench.main.js:28:2055793
    at _.e.dispatch (file:///Applications/Visual Studio Code.app/Contents/Resources/app/out/vs/workbench/workbench.main.js:28:2057144)
    at _.e.handleData (file:///Applications/Visual Studio Code.app/Contents/Resources/app/out/vs/workbench/workbench.main.js:28:2056652)
    at Socket.<anonymous> (file:///Applications/Visual Studio Code.app/Contents/Resources/app/out/vs/workbench/workbench.main.js:28:2055653)
    at emitOne (events.js:96:13)

DonJayamanne · 2017-11-16T21:18:39Z

Could be related to #157 (even though that's local debugging)

DonJayamanne · 2018-01-02T20:51:50Z

@balsoft @waleedka Are you still experiencing this issue with the latest version of the extension.
We've fixed a number of bugs in the debugger since then.

Please could you check and get back to me.
I've tested this at my end and it works as expected.

MikhailArkhipov · 2018-02-12T18:01:15Z

It's been a while without more info, closing. Feel free to reactivate if this is still a problem. Thanks.

DonJayamanne added bug labels Nov 13, 2017

DonJayamanne removed bug labels Nov 14, 2017

brettcannon added awaiting 1-verification area-debugging bug Issue identified by VS Code Team member as probable bug labels Nov 14, 2017

DonJayamanne added info-needed Issue requires more information from poster and removed awaiting 1-verification labels Jan 2, 2018

MikhailArkhipov closed this as completed Feb 12, 2018

lock bot locked as resolved and limited conversation to collaborators Jul 12, 2018

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Uh oh!

Remote Debugger crash: TypeError: Cannot read property 'Threads' of undefined #126

Remote Debugger crash: TypeError: Cannot read property 'Threads' of undefined #126

DonJayamanne commented Nov 13, 2017

DonJayamanne commented Nov 13, 2017

Uh oh!

DonJayamanne commented Nov 13, 2017

Uh oh!

DonJayamanne commented Nov 13, 2017

Uh oh!

DonJayamanne commented Nov 13, 2017

Uh oh!

DonJayamanne commented Nov 13, 2017

Uh oh!

DonJayamanne commented Nov 13, 2017

Uh oh!

DonJayamanne commented Nov 13, 2017

Uh oh!

DonJayamanne commented Nov 16, 2017

Uh oh!

DonJayamanne commented Jan 2, 2018

Uh oh!

MikhailArkhipov commented Feb 12, 2018

Uh oh!

Remote Debugger crash: TypeError: Cannot read property 'Threads' of undefined #126

Remote Debugger crash: TypeError: Cannot read property 'Threads' of undefined #126

Comments

DonJayamanne commented Nov 13, 2017

Environment data

Actual behavior

Expected behavior

Steps to reproduce:

Settings

Logs

Note

DonJayamanne commented Nov 13, 2017

Please try using ptvsd 3.0.0 (temporary solution)

Uh oh!

DonJayamanne commented Nov 13, 2017

Uh oh!

DonJayamanne commented Nov 13, 2017

Uh oh!

DonJayamanne commented Nov 13, 2017

Uh oh!

DonJayamanne commented Nov 13, 2017

Uh oh!

DonJayamanne commented Nov 13, 2017

Uh oh!

DonJayamanne commented Nov 13, 2017

Uh oh!

DonJayamanne commented Nov 16, 2017

Uh oh!

DonJayamanne commented Jan 2, 2018

Uh oh!

MikhailArkhipov commented Feb 12, 2018

Uh oh!