Hello!

I am a beginner in oTree and have just finished a Python course. I am using VS Code and trying to create some simple apps. I am following examples from the manual at Experiment Cookbook and oTree videos on YouTube.

I just created a questionnaire app, but there is a problem. The interface is not showing my new app. The result is an empty page after I use the command otree devserver and click the link. I have checked all the elements (settings, __init__.py, HTML, etc.) and found no problems. I also tried reinstalling Python and oTree, and created a new environment from the beginning, but nothing works.

Does anybody know how to fix this issue?

Thanks a lot! Wish you a nice day.

Without being able to take a look at your code, it will be very hard to diagnose the issue ...

Thank you so much. I already figured it out. The problem was the virtual environment - I just created a new project with a new app, and also created a new environment while choosing the explicit path to Pythoon. So thanks to this, everything is ok now.