# Help with trying to run experiment on Pavlovia, but stuck error comes up
**URL:** https://discourse.psychopy.org/t/help-with-trying-to-run-experiment-on-pavlovia-but-stuck-error-comes-up/22297
**Category:** Online experiments
**Created:** [April 14, 2021, 7:11pm UTC](https://discourse.psychopy.org/t/help-with-trying-to-run-experiment-on-pavlovia-but-stuck-error-comes-up/22297 "2021-04-14T19:11:43Z")
**Posts on this page:** 5
**Page:** 1
### Author:  [@Hstallman](https://discourse.psychopy.org/u/Hstallman)
#### Post date: [April 14, 2021, 7:11pm UTC](https://discourse.psychopy.org/t/help-with-trying-to-run-experiment-on-pavlovia-but-stuck-error-comes-up/22297/1 "2021-04-14T19:11:43Z")
URL of experiment: [stroop mixed [PsychoPy]](https://run.pavlovia.org/Hstallman/stroop-mc/? __pilotToken=1f0e3dad99908345f7439f8ffabdffc4&__ oauthToken=9c6bb82d40b6845f723d63d3f028fcbd76a316345a4746c55540fadd8f34e44d)
Description of the problem:
Hopefully you’ll be able to see these picture
[https://mail.google.com/mail/u/4?ui=2&ik=38bed680e8&attid=0.1&permmsgid=msg-f:1697044153589438050&th=178d1caa96da1662&view=att&disp=safe](https://mail.google.com/mail/u/4?ui=2&ik=38bed680e8&attid=0.1&permmsgid=msg-f:1697044153589438050&th=178d1caa96da1662&view=att&disp=safe)
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### Author:  [@Hstallman](https://discourse.psychopy.org/u/Hstallman)
#### Post date: [April 14, 2021, 7:13pm UTC](https://discourse.psychopy.org/t/help-with-trying-to-run-experiment-on-pavlovia-but-stuck-error-comes-up/22297/2 "2021-04-14T19:13:30Z")
[https://mail.google.com/mail/u/4?ui=2&ik=38bed680e8&attid=0.3&permmsgid=msg-f:1697044153589438050&th=178d1caa96da1662&view=att&disp=safe](https://mail.google.com/mail/u/4?ui=2&ik=38bed680e8&attid=0.3&permmsgid=msg-f:1697044153589438050&th=178d1caa96da1662&view=att&disp=safe)
I’m assuming the red coding means something is wrong or there is an error. But I can’t read coding so I don’t know what to do.
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### Author:  [@sotiri](https://discourse.psychopy.org/u/sotiri)
#### Post date: [April 14, 2021, 9:26pm UTC](https://discourse.psychopy.org/t/help-with-trying-to-run-experiment-on-pavlovia-but-stuck-error-comes-up/22297/3 "2021-04-14T21:26:56Z")
Hi @Hstallman, sorry to hear Pavlovia is giving you trouble staging your study. I’m unable to access the project you link to, please would it be possible to give our support account developer access? Thanks, s.
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### Author:  [@Hstallman](https://discourse.psychopy.org/u/Hstallman)
#### Post date: [April 14, 2021, 11:44pm UTC](https://discourse.psychopy.org/t/help-with-trying-to-run-experiment-on-pavlovia-but-stuck-error-comes-up/22297/4 "2021-04-14T23:44:49Z")
[https://run.pavlovia.org/Hstallman/mixed-con/?\_\_pilotToken=1ff1de774005f8da13f42943881c655f&\_\_oauthToken=9c6bb82d40b6845f723d63d3f028fcbd76a316345a4746c55540fadd8f34e44d](https://run.pavlovia.org/Hstallman/mixed-con/? __pilotToken=1ff1de774005f8da13f42943881c655f&__ oauthToken=9c6bb82d40b6845f723d63d3f028fcbd76a316345a4746c55540fadd8f34e44d)
Let me know if this one works, I think the first one might of expired.
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### Author:  [@sotiri](https://discourse.psychopy.org/u/sotiri)
#### Post date: [April 15, 2021, 7:49am UTC](https://discourse.psychopy.org/t/help-with-trying-to-run-experiment-on-pavlovia-but-stuck-error-comes-up/22297/5 "2021-04-15T07:49:03Z")
Cool, thanks for the link, it looks like the main script of “stroop mixed.js” is missing, please could you double check the file is in place? x
