Hey Becca,
I also had a participant receive the "Unfortunately we encountered the following error:
when uploading participant’s results for experiment: " error. They stated that their Internet may have gone out at that time. Is there a fix for this? Or perhaps a way for Pavlovia to try again to upload the data/make contact with a participant’s computer?
Thank you.
One of my students just got the same problem, and wondered whether it was related to network security at her place of work.
@thomas_pronk has suggested gathering some network logs, like saving a HAR file which he mentioned in his bug report guidelines (pages 3-4).
Same issue here: Just got the message that a participant received an error in uploading data message. A credit has been reserved but I don’t have any data or a log file in my gitlab folder. My saving format is csv and I’m also saving incomplete results (although that doesn’t seem to work properly too)
Any ideas what the issue is, how to prevent this or get the data back?
One of my students has just experienced the same error as @rkempner. Is this likely to have been caused by me uploading 2021.1.4 edits to an experiment that Pavlovia still thinks is 2020.2.10? I’ve just switched it to inactive then active again to check?
I encountered exactly the same error as aparna11, really unspecific “error when uploading participant’s results for experiment”.
I am running a training study with sessions from Monday to Friday for each participant. After testing the first 30 participants, now for the 31st this error occurred 2 days in a row for this participant. Thus, it seems that some specific computer/ browser settings may cause this problem (?). The participant reported that the internet connection was stable across the experiment.
I just encountered the same error. Has your student found the solution to the issue?
I’ve recently started testing participants and a couple of the people I have tested so far have experienced this error: “Unfortunately we encountered the following error: when uploading participant’s results for the experiment” and “when flushing participant’s logs for the experiment, when uploading participant’s log for the experiment”.
This error occurred right at the end of the experiment on day 2 for both participant’s and their data was not saved.
I did not encounter this error before when collecting data and the only changes I have made is that participant’s are now redirected to a different questionnaire on qualtrics for each day, so I have made 3 different experiments one for each day depending on the questionnaire they need to complete. After these 2 participant’s got this error they then cleared their cashe and redid the experiment and after doing this they didn’t get the error.
I wondered if anyone has found exactly why this occurs yet and how it can be prevented?
Hi,
I have the same problem and really don’t know how to solve it. My experiment in running for more than 1 year, without any problem, but now, two participants who do not know each other forwarded me exactly the same error message. If I run the experiment on my, or any other computer, I don’t have that problem. As I’m loosing data among very difficult to reach participants, I’m a bit worried, so any help on this issue is welcome!
Do you think that both participants were online at the same time? It looks like there might have been a brief network outage. If you can give me the date I’ll see if there was anything about it on our server monitor.
Also, it could have been a local Internet connection outage. Possibly from a service provider.
Thanks for the fast reply. I contacted the participants, but no reaction so far. I keep you updated.
Best, Hendrik
Hi,
One of the participants replied. He tried to do the experiment one more time (this morning, around 10AM, CEST) , and got similar problems. This is the screenshot he sent me.
Best, Hendrik
Is there any possibility that there are special characters in the value for participant?
If your participant entered something into the loading screen for participant, please could you ask what it was?
Please could you also check whether any participant files appeared in your repository at that time? if you are using CSV saving then there should be two. It’s possible that one did get uploaded.
Hi,
No, the value for the participant field comes from the URL and was SS in this case. In my experiment, the participant field refers to the research assistant, so I can easily count how many participants that each research assistant recruits. The research assistant (SS) tried to redo the experiment this morning around 10 AM (CEST), but without success. I don’t find any data file from him. The last data file that I find from that research assistant is one of yesterday, but the experiment has been aborted half way.
Best, Hendrik
Hi,
Just reporting that my participant got back to me saying his task ended with a similar message to the one discussed in this post:
"Unfortunately we encountered the following error:
Try to run the experiment again. If the error persists, contact the experiment designer."
I checked/downloaded my files and there does not seem to be any trace of their data. It would be great to get some help and try to salvage the data, as the task takes around 40 minutes for the participant to do, and it’s a real shame that it goes to waste. Also please let me know if there is a final verdict on how I can prevent this in the future. Thank you!
Best wishes, Milan
I had this same problem and found that two participants were online at the same time on different computers. Is it possible for two people to perform the experiment simultaneously? Or was this the cause of the error?
Hello @Thayane,
It is very unlikely that this should be the reason for the absence of results.
But I will happily look into it for you.
Could you share the full path of your experiment?
Cheers,
Alain
My apologies for the delay.
Could you share the full path to your online experiment, on pavlovia.org, so I can check our logs?
Best wishes,
Alain
Sure, no problem. Can you tell me how I do that, please?
Best wishes.
Can you share the URL of your experiment, on pavlovia.org?
