# Cannot run piloting (showing blank page)

**URL:** <https://discourse.psychopy.org/t/cannot-run-piloting-showing-blank-page/34859>\
**Category:** Online experiments\
**Created:** [May 12, 2023, 1:18pm UTC](https://discourse.psychopy.org/t/cannot-run-piloting-showing-blank-page/34859 "2023-05-12T13:18:52Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Yao-Ting\_Ko](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.psychopy.org/yao-ting_ko/32/38133_2.png) [@Yao-Ting\_Ko](https://discourse.psychopy.org/u/Yao-Ting_Ko)\
**Post date:** [May 12, 2023, 1:18pm UTC](https://discourse.psychopy.org/t/cannot-run-piloting-showing-blank-page/34859/1 "2023-05-12T13:18:52Z")

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Please help:

URL of experiment:  
Project ID: 311120

> **[Pavlovia](https://pavlovia.org/YaoTingKo/sensory_attenuation)**
>
> The place for the wide community of researchers in the behavioural sciences to run, share, and explore experiments online

Description of the problem:  
I cannot pilot the experiment to test whether it is working adequately on the platform.  
Every time I press the “pilot” button on the screen, I get a blank page, as the following:

[https://run.pavlovia.org/YaoTingKo/sensory\_attenuation/index.html/?\_\_pilotToken=c51ce410c124a10e0db5e4b97fc2af39&\_\_oauthToken=1fdf7fb25de3d484dc2461a138b2bdd4c92983f6f68d91d5fe34149005fa7c1f](https://run.pavlovia.org/YaoTingKo/sensory_attenuation/index.html/? __pilotToken=c51ce410c124a10e0db5e4b97fc2af39&__ oauthToken=1fdf7fb25de3d484dc2461a138b2bdd4c92983f6f68d91d5fe34149005fa7c1f)

Thank you!

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**Author:** ![wakecarter](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.psychopy.org/wakecarter/32/5753_2.png) [@wakecarter](https://discourse.psychopy.org/u/wakecarter)\
**Post date:** [May 12, 2023, 1:30pm UTC](https://discourse.psychopy.org/t/cannot-run-piloting-showing-blank-page/34859/2 "2023-05-12T13:30:43Z")

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You link has index.html as a folder name, which has come up quite a few times.

> [@403 forbidden nginx error when piloting](https://discourse.psychopy.org/t/403-forbidden-nginx-error-when-piloting/31765/5):
>
> You appear to have a folder called index.html Please delete it, check that your Experiment Settings/Online/Output path folder is blank and then try again.

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**Author:** ![Yao-Ting\_Ko](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.psychopy.org/yao-ting_ko/32/38133_2.png) [@Yao-Ting\_Ko](https://discourse.psychopy.org/u/Yao-Ting_Ko)\
**Post date:** [May 12, 2023, 5:23pm UTC](https://discourse.psychopy.org/t/cannot-run-piloting-showing-blank-page/34859/4 "2023-05-12T17:23:32Z")

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Thank you for the information, but:

1. I have deleted the index.html folder, but I still got a blank page when I pressed the ‘pilot’ button on the screen.
2. I tried to re-upload my project. On PsychoPy Builder, I pressed the button for “run the study online”. However, I got an error message. The following are the details. Please help me with this issue. Thank you!

Traceback (most recent call last):  
File “C:\Program Files\PsychoPy\lib\site-packages\gitlab\exceptions.py”, line 304, in wrapped\_f  
return f(\*args, \*\*kwargs)  
File “C:\Program Files\PsychoPy\lib\site-packages\gitlab\mixins.py”, line 112, in get  
server\_data = self.gitlab.http\_get(path, \*\*kwargs)  
File “C:\Program Files\PsychoPy\lib\site-packages\gitlab\client.py”, line 662, in http\_get  
result = self.http\_request(  
File “C:\Program Files\PsychoPy\lib\site-packages\gitlab\client.py”, line 628, in http\_request  
raise gitlab.exceptions.GitlabHttpError(  
gitlab.exceptions.GitlabHttpError: 404: 404 Project Not Found

The above exception was the direct cause of the following exception:

Traceback (most recent call last):  
File “C:\Program Files\PsychoPy\lib\site-packages\psychopy\projects\pavlovia.py”, line 663, in project  
self.\_project = self.session.gitlab.projects.get([self.id](http://self.id))  
File “C:\Program Files\PsychoPy\lib\site-packages\gitlab\v4\objects\projects.py”, line 782, in get  
return cast(Project, super().get(id=id, lazy=lazy, \*\*kwargs))  
File “C:\Program Files\PsychoPy\lib\site-packages\gitlab\exceptions.py”, line 306, in wrapped\_f  
raise error(e.error\_message, e.response\_code, e.response\_body) from e  
gitlab.exceptions.GitlabGetError: 404: 404 Project Not Found

During handling of the above exception, another exception occurred:

Traceback (most recent call last):  
File “C:\Program Files\PsychoPy\lib\site-packages\psychopy\app\builder\builder.py”, line 1388, in onPavloviaRun  
if not (Path(self.project.localRoot) / ‘index.html’).is\_file():  
File “C:\Program Files\PsychoPy\lib\site-packages\psychopy\projects\pavlovia.py”, line 746, in localRoot  
if self.project.path\_with\_namespace in knownProjects:  
File “C:\Program Files\PsychoPy\lib\site-packages\psychopy\projects\pavlovia.py”, line 666, in project  
raise KeyError(f"Could not find GitLab project with id {[self.id](http://self.id)}.")  
KeyError: ‘Could not find GitLab project with id 285987.’

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**Author:** ![Chen](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.psychopy.org/chen/32/38825_2.png) [@Chen](https://discourse.psychopy.org/u/Chen)\
**Post date:** [May 14, 2023, 12:10pm UTC](https://discourse.psychopy.org/t/cannot-run-piloting-showing-blank-page/34859/5 "2023-05-14T12:10:07Z")

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Can you please send a link to your repository so I can have a look?

Thanks,  
Chen