"ERROR: Theme file compilation failed" when running quarto preview

[Tiddy-Fje]

Description

I am new to quarto. I'm trying to replicate this tutorial. I use the newest version of VScode & quarto and a conda environement which I selected using the "Python: select interpreter" command. I also enabled the quarto extension for VScode.
When click on the preview button (or manually run quarto preview c:/path/to/folder/my-demo.qmd --no-browser --no-watch-inputs) I get the following error message :

Done

Executing 'my-demo.ipynb'
  Cell 1/1...Done

ERROR: Theme file compilation failed:



Error: Theme file compilation failed:


    at dartCommand (file:///C:/Users/User/AppData/Local/Programs/Quarto/bin/quarto.js:59894:15)
    at async dartCompile (file:///C:/Users/UserAppData/Local/Programs/Quarto/bin/quarto.js:59856:5)
    at async compileWithCache (file:///C:/Users/UserAppData/Local/Programs/Quarto/bin/quarto.js:60084:17)
    at async compileSass (file:///C:/Users/User/AppData/Local/Programs/Quarto/bin/quarto.js:59946:12)
    at async resolveSassBundles (file:///C:/Users/UserAppData/Local/Programs/Quarto/bin/quarto.js:76333:27)
    at async resolveExtras (file:///C:/Users/User/AppData/Local/Programs/Quarto/bin/quarto.js:80428:18)
    at async runPandoc (file:///C:/Users/User/AppData/Local/Programs/Quarto/bin/quarto.js:79983:24)
    at async renderPandoc (file:///C:/Users/User/AppData/Local/Programs/Quarto/bin/quarto.js:81044:26)
    at async Object.onRender (file:///C:/Users/User/AppData/Local/Programs/Quarto/bin/quarto.js:86673:36)
    at async renderFiles (file:///C:/Users/User/AppData/Local/Programs/Quarto/bin/quarto.js:86636:25)

Can anyone spot where I went wrong ?
Thank you for your time !

[mcanouil]

Hard to tell without knowing your environment:

• What's your operating system?
• What's the Quarto version you are using?
• What's the output of quarto check (to be run in a terminal)?

[Tiddy-Fje]

Oh, sorry for the confusion. I meant I have tried both of these and none of them works.

[cderv]

none of them works.

no error ? Nothing printed in console ?

They should both print a version - if they are not this means something on your environment is preventing that to happen. I don't know what... 🤔

[Tiddy-Fje]

I get the following

(base) PS C:\Users\User> C:\Users\User\AppData\Local\Programs\Quarto\bin\tools\dart-sass\sass.bat --version
(base) PS C:\Users\User> C:\Users\User\AppData\Local\Programs\Quarto\bin\tools\dart-sass\src\dart.exe --version
Dart SDK version: 2.18.1 (stable) (Tue Sep 13 11:42:55 2022 +0200) on "windows_x64"

so if I understand correctly, dart.exe works but sass.bat doesn't ?
(I don't know why the second command seems to work now)

[cderv]

so if I understand correctly, dart.exe works but sass.bat doesn't ?

Yes exactly. This means this is what we think from the start i.e

Do you have anti-virus software that prevents the execution of .bat files? That's a common cause of this issue.

It seems something is preventing BAT file to execute correctly. We plan to make some improvement to bypass sass.bat - follow this

• Quarto check fails and render to HTML fails in secured enterprise environment #6651

but .bat file are often use in software, so finding the reason why you can't run it could be interesting for you.

[Tiddy-Fje]

Thank you very much !
Sorry for taking so much of your time.

[LCPallares]

I have the same error:
quarto\1.6.39\bin\tools\x86_64\dart-sass\sass.bat --version
1.70.0
quarto\1.6.39\bin\tools\x86_64\dart-sass\src\dart.exe --version
Dart SDK version: 3.2.5 (stable) (Tue Jan 16 15:02:13 2024 +0000) on "windows_x64"

[cderv]

@LCPallares is this different that what I said in latest comment on this thread ?

• "ERROR: Theme file compilation failed" when running quarto preview #6872 (reply in thread)

It seems related and issue is opened

• Quarto check fails and render to HTML fails in secured enterprise environment #6651

[LCPallares]

quarto preview prueba_r.qmd
processing file: prueba_r.qmd
1/3
2/3 [unnamed-chunk-1]
3/3
output file: prueba_r.knit.md
ERROR: Theme file compilation failed:
===== CRASH =====
Stack trace:
===== CRASH =====
at dartCommand (file:///C:/Users/Aunak/scoop/apps/quarto/current/bin/quarto.js:43131:15)
at eventLoopTick (ext:core/01_core.js:175:7)
at async dartCompile (file:///C:/Users/Aunak/scoop/apps/quarto/current/bin/quarto.js:43093:5)
at async file:///C:/Users/Aunak/scoop/apps/quarto/current/bin/quarto.js:50528:13
at async SassCache.setFromHash (file:///C:/Users/Aunak/scoop/apps/quarto/current/bin/quarto.js:43179:13)
at async compileSass (file:///C:/Users/Aunak/scoop/apps/quarto/current/bin/quarto.js:50371:21)
at async resolveSassBundles (file:///C:/Users/Aunak/scoop/apps/quarto/current/bin/quarto.js:72877:23)
at async resolveExtras (file:///C:/Users/Aunak/scoop/apps/quarto/current/bin/quarto.js:77506:18)
at async runPandoc (file:///C:/Users/Aunak/scoop/apps/quarto/current/bin/quarto.js:77026:24)
at async renderPandoc (file:///C:/Users/Aunak/scoop/apps/quarto/current/bin/quarto.js:78450:26)

D:\Programacion\Python\Web\quarto>D:\Programacion\Python\Entornos_Virtuales\entorno_ds\Scripts\activate
(entorno_ds) D:\Programacion\Python\Web\quarto>quarto preview prueba_python.qmd
Starting python3 kernel...Done

Executing 'prueba_python.quarto_ipynb'
Cell 1/1: ''...Done

ERROR: Theme file compilation failed:
===== CRASH =====
Stack trace:
===== CRASH =====
at dartCommand (file:///C:/Users/Aunak/scoop/apps/quarto/current/bin/quarto.js:43131:15)
at eventLoopTick (ext:core/01_core.js:175:7)
at async dartCompile (file:///C:/Users/Aunak/scoop/apps/quarto/current/bin/quarto.js:43093:5)
at async file:///C:/Users/Aunak/scoop/apps/quarto/current/bin/quarto.js:50528:13
at async SassCache.setFromHash (file:///C:/Users/Aunak/scoop/apps/quarto/current/bin/quarto.js:43179:13)
at async compileSass (file:///C:/Users/Aunak/scoop/apps/quarto/current/bin/quarto.js:50371:21)
at async resolveSassBundles (file:///C:/Users/Aunak/scoop/apps/quarto/current/bin/quarto.js:72877:23)
at async resolveExtras (file:///C:/Users/Aunak/scoop/apps/quarto/current/bin/quarto.js:77506:18)
at async runPandoc (file:///C:/Users/Aunak/scoop/apps/quarto/current/bin/quarto.js:77026:24)
at async renderPandoc (file:///C:/Users/Aunak/scoop/apps/quarto/current/bin/quarto.js:78450:26)

[mcanouil]

@LCPallares Could you kindly refrain from sharing error messages without any accompanying context? This approach is neither helpful nor constructive. Additionally, two individuals, myself included, have already requested a fully reproducible example or detailed steps to replicate the issue, along with clarification as to whether your issue pertains to the one previously linked.

We would appreciate it if you could address these queries directly and provide a comprehensive outline of the steps required to reproduce the issue. Without this information, we will unfortunately be unable to assist you further.

Thank you for your understanding and cooperation.

[LCPallares]

Sorry, those messages are the results of running the 2 .qmd you wrote.
The context is not much, I just followed the official tutorial, installed quarto and trying to preview even the default project gave me these errors.

It also appears when using quarto check, quarto check knitr or quarto check jupyter

I was doing some research with AI, to see if my system canceled the execution of any process with process monitor, using the event viewer I found this:

I'm going to investigate the cause, maybe it's the firewall or the antivirus, I don't know.

[mcanouil]

Sorry, those messages are the results of running the 2 .qmd you wrote.

Context matters. There is no way for anyone to guess that.

---

As pointed out by Christophe, it might be your environment, like an enterprise firewall / security policy:

• Quarto check fails and render to HTML fails in secured enterprise environment #6651