# Unable to upload experiment to Pavlovia

**URL:** <https://discourse.psychopy.org/t/unable-to-upload-experiment-to-pavlovia/12911>\
**Category:** Online experiments\
**Created:** [April 30, 2020, 3:11pm UTC](https://discourse.psychopy.org/t/unable-to-upload-experiment-to-pavlovia/12911 "2020-04-30T15:11:46Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Jane](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.psychopy.org/jane/32/5463_2.png) [@Jane](https://discourse.psychopy.org/u/Jane)\
**Post date:** [April 30, 2020, 3:11pm UTC](https://discourse.psychopy.org/t/unable-to-upload-experiment-to-pavlovia/12911/1 "2020-04-30T15:11:46Z")

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Hi, I am quite new with Psychopy and I have been running into a lot of problems lately. I was having issues with fixing custom code on Psychopy so it can be run on Pavlovia, so I manually changed some code in the js files on the Pavlovia site, and ever since then, I can’t upload changes of my experiment from my builder to Pavlovia. Every time I try I kept receiving the following error:  
I tried to revert the changes I made in the JS files as well as re-uploading a new experiment, but nothing works. Any help would be great!

 ![Screen Shot 2020-04-30 at 11.09.58 AM](https://us1.discourse-cdn.com/flex002/uploads/psychopy/original/3X/9/7/97eb116e8809c2b80be3b6e3c314c1ab83a67a8a.png)