no response after click the Sync from Canvas

[xuelingqin]

As the title suggest, no any response if I click the button "Sync from Canvas " This issue show up when I update the program to current version and it only happens on Windows. This could be a Conda environment problem.

To Reproduce Steps to reproduce the behavior:

1. run the server and login
2. click add next to my course or
3. click the "Sync from Canvas" or "add manually"

Expected behavior no response both in the Anaconda prompt and the browser the prompt remains: [02/Sep/2024 23:39:50] "GET / HTTP/1.1" 200 9874 [02/Sep/2024 23:39:51] "GET /static/courses/user_list.css HTTP/1.1" 304 0

Entering an old course or add the course manually at (http://127.0.0.1:8000/admin/courses/course/) then if I try to use "Sync from Canvas" in the course, it reports Only GET requests are allowed. Reload to see the changes.

Desktop (please complete the following information):

• OS: [windows10-64]
• Browser [chrome]
• Conda Version [24.7.1]

Additional context I tried to remove all files and reinstall the whole program, or change the token, or update Conda (which makes nothing new). No special things happens.

[IonMich]

Thank you for reporting this @xuelingqin! I will try to reproduce and let you know later today.

[xuelingqin]

Not urgent, I have a Mac that everything works.

[IonMich]

Good to hear that. I also verified that the issue does not appear after a clean install of conda in Ubuntu 22.04+Chrome. Will try Windows next.

By the way, it might be useful additionally to know the following:

• While in the home page of the app on Chrome, if you right click and select "Inspect", do you see any browser errors in the Console when you click on "Sync from Canvas"? Since there is no response in the Anaconda Prompt this might mean that there was an error before a request was sent to the Django server.
• if you activate the conda environment and run the command "conda list" in the Anaconda prompt, what version do you get for the package "django"? We want this ideally to be in the 4.1.x range for best results.

[xuelingqin]

My "django" version is 4.1.7

You are right, there is an error on the browser: This error occurs when I enter the page 127.8. (not even click on the button)

• **Uncaught TypeError: Cannot read properties of null (reading 'querySelector')

  at user_list.js:27:39 user_list.js:27:39 (anonymous) @ user_list.js:27**

• bi-sun-fill app.js:43
• bi-sun-fill app.js:44 and then no update when I click on "Sync from Canvas" in the "+" sign.

When I enter the course and click on "Sync from Canvas", another error occurs:

• prevent default detail.js:53 {message: 'Only GET requests are allowed.'} detail.js:99 message: "Only GET requests are allowed."
• **error detail.js:118
• toast detail.js:123 <div class=​"toast fade border-0 bg-danger text-white show showing" role=​"alert" data-bs-autohide=​"false">​…​

[IonMich]

Thank you for the helpful additional information @xuelingqin. I just clean-installed the app on a Windows machine and things went smoothly - I can add and update courses from Canvas. I am wondering if this is a browser cache issue. Since the main error here is Cannot read properties of null (reading 'querySelector'), it seems to me that the app retrieves an outdated version of a javascript file, that might be stored in your browser cache. Does reloading the home page while clearing the cache (Ctrl+Shift+R) resolve the issue maybe? This is the last step of the update instructions, and a frequent cause of similar issues.

[IonMich]

Hello @xuelingqin, did you by any chance check if the issue on Windows is resolved by deleting the browser cache for Instructor Pilot (Ctrl+Shift+R)? I have not been able to reproduce it.