Can't download as PDF file

[Jin-yan Hu]

Hi Randy, qatrackplus 3.1.0 is configured correctly, but the downloaded pdf reports cannot be opened, the volume is 0. How do I fix it?

Thank you very much.

[Jin-yan Hu]

report-stderr.txt:

ERROR:message_window.cc(116)] Failed to create a message-only window:(0x8)

[Randle Taylor]

Hi, 

I have seen this one other time and it was an issue with Google Chrome failing to launch for some reason.  Rebooting the server fixed it in that case, so hopefully that will work for you too.

Randy

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[German Dauro]

Hello Hu,
I have exactly the same problem. Could you solve it?
I rebooted servers and computers and tried other browsers,
but the problem is not that, the file downloaded realy is empty.
Any help is appreciated.
Sincerely

[Kurtis Dekker]

This has been happening on my setup as well (windows host) for the past couple of weeks.

[German Dauro]

Hello kurtis,
I have two QATrack running, one of them on Windows 7 and the other on Windows 8.1. 

A few days ago, a notification from Google Chrome said that I must have Windows 10 at least for new updates. 

I don't know if that condition is relevant, but this problem occurred at the same time on two different OS. 

So, what version of Windows do you have?

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[Kurtis Dekker]

This is on a windows 10 machine.

I suspect it is due to something in the chrome 109 release.

[Randle Taylor]

Hi All,

This is almost certainly due to a Chrome update.  QATrack+ uses the command line interface of Chrome to generate PDF files so there must have been an update recently that broke things.  I'll post an update here after investigating.

Randy

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[Kurtis Dekker]

Hi Randy, i believe i found the issue in the “chrome2pdf” function - it opens the pdf file before calling chrome to write to it which seems not to work anymore.

If you close the file before calling the chrome command it seems to work again. 

Sent from my iPhone

On Jan 21, 2023, at 10:30 AM, Randle Taylor <randle...@gmail.com> wrote:



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[Randle Taylor]

Confirmed!  Thanks for investigating Kurtis.  I've fixed the issue for the next bugfix release.

Randy

[Kurtis Dekker]

Thanks Randy,

In follow up from this - is PDF generation the only usage of chrome in QATRACK+? 

Wondering if it is possible to replace this with something less prone to change.

Kurtis

[Randle Taylor]

Yes, Chrome is only used for generating PDFs.  Right now reports are all generated as HTML then chrome is used to convert the html to pdf.  I looked at other ways to do this including wkHtmlToPDF but didn't get as good of results with layout and in particular breaking pages in tables.  That was quite a while ago so that may have changed now as I think there's been at least 1 wkHtmlToPDF release since then.

The other option is to use something like ReportLab to generate reports, but my experience in other projects that used ReportLab is that manually laying out PDF's is a huge headache, so I'm not particularly interested in going down that road. Again, maybe things have changed on that front though.

Randy

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[German Dauro]

Hi Randy.
Thanks for the solution.
I have a problem when I replace the *.utils.py file in the qatrack/qatrack_core/utils.py folder, 

I can't access it because of ERROR 502.3 Bad Gateway, 

I think it's because the CherryPyService service stops working, 

but I can't restart it, I attached screenshots.
How can I fix it? Thanks!
Germán.-

[Randle Taylor]

Sorry for the slow response.  If the service won't restart after replacing a file then there is likely some kind of error in that file...possibly something like a syntax error, or a module that is not installed. You can usually look in the log files std_err/std_out log files in the /logs/ directory to get more information about why the service isn't starting.

Randy

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[Randle Taylor]

If you can, I would recommend updating to the latest version of QATrack+ (https://docs.qatrackplus.com/en/stable/install/win_upgrade_from_3.html) where this problem should now be resolved.

RT

On Wed, 22 Mar 2023 at 15:59, 高翔 <gxi...@gmail.com> wrote:

Hello Randy, 

Hello guys,

I have just met a same problem, but the report-stderr was different, see:

[0320/092629.717:ERROR:headless_shell.cc(103)] Failed to write file C:\deploy\qatrackplus\qatrack\media\reports\test-list-instance-summary.pdf_a9b4cf5bc3.html.pdf: The process cannot access the file because it is being used by another process. (0x20)

The report downloads worked normally before I tried to modified the html files in templates/reports, althoungh I double checked the files were set to its original settings, the problem could not be fixed. 

I also rebooted servers  and tried other browsers, but the PDF still 0 bites.

In the django-q.log file, the processing of reports were enqueued all the time, maybe that was the root of the problem.

The problem has puzzed me for many days, could you/anyone please tell me how the fix it?

Here is the error logs.

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[Flavio Salinas Aranda]

Hello Randle, hello all.

We have just upgraded from version 3.1.0 to 3.1.1.0 as you suggested but we still can't get a proper PDF report. Unlike what happened before, we don't get an empty 0 kB report but it's still empty except for some colored cells showing.

We're using Google Chrome Version 123.0.6312.106 (Official Build) (64-bit), MS Windows Server 2016 Standard and MS SQL Server 2017.

Any clues of what might be happenning?

Thank you.

[Alex Bredikin]

HI Flavio,

I was having a similar issue - see if this resolves it for you: https://github.com/qatrackplus/qatrackplus/issues/659#issuecomment-1855051487

Alex

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[Flavio Salinas Aranda]

Thank you Alex, it worked just fine!

Flavio.