# Online experiment hangs midway through

**URL:** <https://discourse.psychopy.org/t/online-experiment-hangs-midway-through/31594>\
**Category:** Online experiments\
**Created:** [October 27, 2022, 10:46am UTC](https://discourse.psychopy.org/t/online-experiment-hangs-midway-through/31594 "2022-10-27T10:46:40Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Marc\_Buehner](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.psychopy.org/marc_buehner/32/3476_2.png) [@Marc\_Buehner](https://discourse.psychopy.org/u/Marc_Buehner)\
**Post date:** [October 27, 2022, 10:46am UTC](https://discourse.psychopy.org/t/online-experiment-hangs-midway-through/31594/1 "2022-10-27T10:46:40Z")

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URL of experiment: [V1.2\_shorttest\_JS [PsychoPy]](https://run.pavlovia.org/MJB/predcausvarddv)

Description of the problem:  
I collected data successfully with the above URL earlier this year and now want to do a 2nd wave of data collection. Upon testing it, I noticed that it now hangs in the 2nd phase, hallway through the experiment, on exactly the same spot each time.  
Nothing has changed, it is the same version I used before.  
There are no error messages, and it works fine locally so I cannot discern what the problem is.

The experiment has 2 phases, the 1st of which involves participants judging the variability of visual stimuli (6 blocks with 20 trials each;, they judge variation in angle, size, and width, with 2 different variabilities for each type of stimulus)  
The 2nd phase has them judging the variability of temporal intervals, either between 2 observed events or between an action and an event, again 6 blocks of 20 trials each, with 3 degrees of variability for each type of interval).

Any ideas what might be going on?

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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:** [October 27, 2022, 11:13am UTC](https://discourse.psychopy.org/t/online-experiment-hangs-midway-through/31594/2 "2022-10-27T11:13:21Z")

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I just got all the way through (Windows/Chrome). Try Ctrl-Shift-R to flush the cache or an incognito tab. Maybe you’ve got an old version saved in your cache.

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**Author:** ![Marc\_Buehner](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.psychopy.org/marc_buehner/32/3476_2.png) [@Marc\_Buehner](https://discourse.psychopy.org/u/Marc_Buehner)\
**Post date:** [October 27, 2022, 12:54pm UTC](https://discourse.psychopy.org/t/online-experiment-hangs-midway-through/31594/3 "2022-10-27T12:54:32Z")

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Thanks @wakecarter. Very strange, I just tried that and incognito window in Mac/Chrome and it hangs at the same place each time…