# Can't run my online experiment

**URL:** <https://discourse.psychopy.org/t/cant-run-my-online-experiment/8724>\
**Category:** Online experiments\
**Tags:** online\
**Created:** [August 5, 2019, 10:25am UTC](https://discourse.psychopy.org/t/cant-run-my-online-experiment/8724 "2019-08-05T10:25:10Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![stefano\_arlaud](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.psychopy.org/stefano_arlaud/32/5377_2.png) [@stefano\_arlaud](https://discourse.psychopy.org/u/stefano_arlaud)\
**Post date:** [August 5, 2019, 10:25am UTC](https://discourse.psychopy.org/t/cant-run-my-online-experiment/8724/1 "2019-08-05T10:25:10Z")

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Hi!

I’m Stefano and I’m a new user of PsychoPy - I’m actually using the last version, 3.1.5 .  
I’m doing my MSc Research project and I’d like to run my PsychoPy experiment online.

I followed all the steps and I synchronised it on Pavlovia (through the interface, I didn’t upload manually, as you suggested).  
I activated the experiment and I get its URL :

[https://run.pavlovia.org/Stefano/time-perception-exp-msc-research-project/html/](https://run.pavlovia.org/Stefano/time-perception-exp-msc-research-project/html/)

once I’ve copypasted it on the web bar, the browser displayed " initialising the experiment" and it lasted the whole night ( I let my laptop on ‘cause I wondered it was a matter of the size of the file I uploaded, which is around 66 Mb). Unfortunately, it’ s still displaying it, hence not running my experiment.

- you can check by yourself on your browser either -

I really don’t have an idea about how to fix it, I’m wondering if is a matter of the script (Phython - Java). I’m quite anxious because I need to fix it soon as I wish to start to collect data as soon as possible.

I attached the .psyexp & the .py files. I also attached a screenshot of the mentioned blank page displayed once I launched the experiment

[59|690x337](https://discourse.psychopy.org/uploads/short-url/zyWFgicOXFYagFeONdowWkghmR6.png)

Any help would be immensely appreciated!

[experiment \_lastrun.py](https://discourse.psychopy.org/uploads/short-url/mdy4xw86yxUBNkAl9pZbH5to12G.py) (350.4 KB) [experiment .psyexp](https://discourse.psychopy.org/uploads/short-url/kjKqN8Vch8whsRfrRY12Mo8dwJF.psyexp) (235.2 KB)

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<div class="post-metadata">

**Author:** ![stefano\_arlaud](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.psychopy.org/stefano_arlaud/32/5377_2.png) [@stefano\_arlaud](https://discourse.psychopy.org/u/stefano_arlaud)\
**Post date:** [August 5, 2019, 12:09pm UTC](https://discourse.psychopy.org/t/cant-run-my-online-experiment/8724/2 "2019-08-05T12:09:18Z")

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Also, I wondered if I should just " translate " the code I used in some part of the experiment and not the builder’s one as a whole ( I read PsychoPy already does it while building the experiment through the interface)

If it’s that, the could would be the following:

 ![57](https://us1.discourse-cdn.com/flex002/uploads/psychopy/original/3X/0/1/018b5c7a7322f9d49cbcbb93944fbb5d8f134d49.png) ![04](https://us1.discourse-cdn.com/flex002/uploads/psychopy/original/3X/e/5/e53af62fec70e815206af35e4736fab622a2f236.png) ![13](https://us1.discourse-cdn.com/flex002/uploads/psychopy/original/3X/9/0/90fc8a1eeb0bdad848a71825d6f83484818d8819.png) ![31](https://us1.discourse-cdn.com/flex002/uploads/psychopy/original/3X/c/0/c086f2c329b7ed65d4f82349d1a83fee53689122.png) ![39](https://us1.discourse-cdn.com/flex002/uploads/psychopy/original/3X/9/3/93c8ac25020cb270e6043e2bce0e69d73b44708b.png) ![46](https://us1.discourse-cdn.com/flex002/uploads/psychopy/original/3X/b/7/b706053d57139d4e99344cf91c1d91808903f444.png) ![54](https://us1.discourse-cdn.com/flex002/uploads/psychopy/original/3X/2/d/2d25610a2731d31bba90e135732ddce742cd955c.png)