# Snapmaker Luban won't work in 3D printer mode. All else is fine

**URL:** <https://forum.snapmaker.com/t/snapmaker-luban-wont-work-in-3d-printer-mode-all-else-is-fine/24716>\
**Category:** Snapmaker Luban\
**Created:** [March 6, 2022, 9:09pm UTC](https://forum.snapmaker.com/t/snapmaker-luban-wont-work-in-3d-printer-mode-all-else-is-fine/24716 "2022-03-06T21:09:13Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![dhill67](https://avatars.discourse-cdn.com/v4/letter/d/bc8723/32.png) [@dhill67](https://forum.snapmaker.com/u/dhill67)\
**Post date:** [March 6, 2022, 9:09pm UTC](https://forum.snapmaker.com/t/snapmaker-luban-wont-work-in-3d-printer-mode-all-else-is-fine/24716/1 "2022-03-06T21:09:13Z")

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Just yesterday my software stopped loading properly for the 3D printer portion. Laser and CNC load properly and function properly. I uninstalled and re-installed the latest version. Some result. At the home page I select “3D printer”, it launches the function and then I get a blank screen in Luban. Menu is available at the top but no 3D viewer or grids. Any suggestions? Nothing has changed, ie…Windows updates, new memory, drives, etc…

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**Author:** ![seanbrawner](https://avatars.discourse-cdn.com/v4/letter/s/b9bd4f/32.png) [@seanbrawner](https://forum.snapmaker.com/u/seanbrawner)\
**Post date:** [April 22, 2022, 11:39am UTC](https://forum.snapmaker.com/t/snapmaker-luban-wont-work-in-3d-printer-mode-all-else-is-fine/24716/2 "2022-04-22T11:39:21Z")

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I’m getting the same problem

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**Author:** ![Savak](https://avatars.discourse-cdn.com/v4/letter/s/ec9cab/32.png) [@Savak](https://forum.snapmaker.com/u/Savak)\
**Post date:** [April 25, 2022, 3:42pm UTC](https://forum.snapmaker.com/t/snapmaker-luban-wont-work-in-3d-printer-mode-all-else-is-fine/24716/3 "2022-04-25T15:42:17Z")

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Use Cura which is much more ‘tweekable’ and supports other nozzle sizes.  
I only use Luban for the Laser function.

Regards  
Graeme

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**Author:** ![Goran](https://avatars.discourse-cdn.com/v4/letter/g/a6a055/32.png) [@Goran](https://forum.snapmaker.com/u/Goran)\
**Post date:** [May 11, 2022, 4:33pm UTC](https://forum.snapmaker.com/t/snapmaker-luban-wont-work-in-3d-printer-mode-all-else-is-fine/24716/4 "2022-05-11T16:33:15Z")

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I have the same issue.  
I get the following error in the developer tools window.

Uncaught (in promise) TypeError: Cannot read property ‘default\_value’ of undefined  
at e.value (app.b676f232f2c99fd8d3bc.bundle.js?_=1647060194828:formatted:168160)  
at app.b676f232f2c99fd8d3bc.bundle.js?_=1647060194828:formatted:182857  
at app.b676f232f2c99fd8d3bc.bundle.js?_=1647060194828:formatted:93904  
at dispatch (app.b676f232f2c99fd8d3bc.bundle.js?_=1647060194828:formatted:81572)  
at app.b676f232f2c99fd8d3bc.bundle.js?_=1647060194828:formatted:182815  
at app.b676f232f2c99fd8d3bc.bundle.js?_=1647060194828:formatted:93904  
at dispatch (app.b676f232f2c99fd8d3bc.bundle.js?_=1647060194828:formatted:81572)  
at app.b676f232f2c99fd8d3bc.bundle.js?_=1647060194828:formatted:182390  
at c (app.b676f232f2c99fd8d3bc.bundle.js?\_=1647060194828:formatted:85868)  
at Generator._invoke (app.b676f232f2c99fd8d3bc.bundle.js?_=1647060194828:formatted:85846)

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<div class="post-metadata">

**Author:** ![Goran](https://avatars.discourse-cdn.com/v4/letter/g/a6a055/32.png) [@Goran](https://forum.snapmaker.com/u/Goran)\
**Post date:** [May 12, 2022, 4:01pm UTC](https://forum.snapmaker.com/t/snapmaker-luban-wont-work-in-3d-printer-mode-all-else-is-fine/24716/5 "2022-05-12T16:01:03Z")

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Okay, per Eamon at Snapmaker Support he provided a fix.

In Luban Hit ALT + SHIFT + R on your keyboard.

This rest all of my previous settings and restarted the wizard to set up my printer and language.

This fixed the problem and I’m back and running!

Thanks Eamon!