PyQt5 WebEngineView If it has cookies, it crashes

[Suundumused]

Every time I start the app, it creates cache and cookies folders, but if I close the application and open it again, it loads the cookies and after about 5 seconds it crashes and closes without errors in the log, until then I have a code that forces it to delete the cookies and cache folders. But it's not what I wanted, I wanted the user to be able to keep cookies without any problems.

Deleting cookies and cache:

try:                
        if os.path.exists(str(str(os.path.expanduser(os.getenv('USERPROFILE'))) + r'\Documents\WebWidget\Cache')):
            shutil.rmtree((str(str(os.path.expanduser(os.getenv('USERPROFILE'))) + r'\Documents\WebWidget\Cache')))
    except:
         pass
       
    try:                
         if os.path.exists(str(str(os.path.expanduser(os.getenv('USERPROFILE'))) + r'\Documents\WebWidget\Storage')):
             shutil.rmtree((str(str(os.path.expanduser(os.getenv('USERPROFILE'))) + r'\Documents\WebWidget\Storage')))
    except:
         pass
    try:                
        if os.path.exists(str(str(os.path.expanduser(os.getenv('USERPROFILE'))) + r'\Documents\WebWidget\DropCache')):
            shutil.rmtree((str(str(os.path.expanduser(os.getenv('USERPROFILE'))) + r'\Documents\WebWidget\DropCache')))
    except:
         pass           
    try:                
        if os.path.exists(str(str(os.path.expanduser(os.getenv('USERPROFILE'))) + r'\Documents\WebWidget\DropStorage')):
            shutil.rmtree((str(str(os.path.expanduser(os.getenv('USERPROFILE'))) + r'\Documents\WebWidget\DropStorage')))
    except:
         pass

Construction of web engine view:

    self.browser = QWebEngineView()

Creating all deleted folders...
........

    profile = QWebEngineProfile("my_profile", self.browser)
    
    profile.defaultProfile().setPersistentCookiesPolicy(QWebEngineProfile.NoPersistentCookies)
    
    profile.defaultProfile().setCachePath(str(str(os.path.expanduser(os.getenv('USERPROFILE'))) + r'\Documents\WebWidget\DropCache'))
    profile.defaultProfile().setPersistentStoragePath(str(str(os.path.expanduser(os.getenv('USERPROFILE'))) + r'\Documents\WebWidget\DropStorage'))
    profile.defaultProfile().setDownloadPath(str(str(os.path.expanduser(os.getenv('USERPROFILE'))) + r'\Downloads'))

    profile.setCachePath(str(str(os.path.expanduser(os.getenv('USERPROFILE'))) + r'\Documents\WebWidget\Cache'))
    profile.setPersistentStoragePath(str(str(os.path.expanduser(os.getenv('USERPROFILE'))) + r'\Documents\WebWidget\Storage'))
    profile.setDownloadPath(str(str(os.path.expanduser(os.getenv('USERPROFILE'))) + r'\Downloads'))
    
    webpage = QWebEnginePage(profile, self.browser)
    webpage.settings().setAttribute(QWebEngineSettings.PlaybackRequiresUserGesture, True)

    self.show()

" profile.defaultProfile().setPersistentCookiesPolicy(QWebEngineProfile.NoPersistentCookies) " I tried setting this value to ForcePersistentCookies or removing it, it didn't change anything.

The entire code of this software is in that repository

[Suundumused]

After all, I configured everything wrong, disregard my code above, i have posted in this Topic the solution.

[jsulm]

@Suundumused said in PyQt5 WebEngineView If it has cookies, it crashes:

without errors in the log

Run through debugger to see what happens

[Suundumused]

@jsulm

[2300:4272:0126/102900.323:ERROR:cache_util_win.cc(20)] Unable to move the cache: 5
[2300:4272:0126/102900.323:ERROR:cache_util.cc(134)] Unable to move cache folder 
[2300:4272:0126/102900.323:ERROR:shader_disk_cache.cc(606)] Shader Cache Creation failed: -2

Release of profile requested but WebEnginePage still not deleted. Expect troubles !

[JonB]

@Suundumused
I would suggest this will be a chromium issue. If you Google for, say, ERROR:cache_util_win.cc you will find quite a few posts to look through matching your error messages.

[Suundumused]

@JonB I used Jupyter in debug, it just returned unknown crash error in the log, ): I'm using Version: 5.15.9, Could a downgrade fix it?

[Suundumused]

After all, I configured everything wrong, disregard my code above, i have posted in this Topic the solution.