Unable to delete ressources

Operating System (e.g. Windows, MacOS, Linux): Windows 10

Browser (e.g. Chrome, Firefox, Safari): Chrome and Edge

Channel (Name of the channel you were working on): EwB Revision :slight_smile:

Description of problem:

For the last 24 hours, I seem to be unable to delete any folders or exercises. I click the checkbox for the resource and then click delete, and nothing happens. I also try clicking on the menu of the resource and then click remove, and nothing happens. I also tried refreshing the page and logged out and in again.
Is there some issue happening on the Kolibri side?

Here are the errors I see in Microsoft Edge Version 101.0.4951.54:

and here are the errors I see in Google Chrome Version 101.0.4951.54:

Hi @nikitab,

We did notice several deletion tasks processing for your channel on Kolibri Studio yesterday. There’s currently a known issue where mass operations can conflict with each other and result in failure. The behavior that you described seems indicative of failure to process some of your deletions.

I’ve loaded your channel in my browser without seeing any of those error messages you’ve shared. I realize you’ve already tried this, but I suggest you sign out and sign back in again. Doing so should clear the channel data stored in your browser. Clearing that data will make sure that your browser and Kolibri Studio’s database are in sync.

If you still see those errors, please share the topic/folder that you’re accessing which causes the errors. As far as deleting your resources, please proceed to do so in small batches over time.

We’re working hard on many fixes to resolve issues like this, and those updates should be released in the next few months.


Thank you for your quick reply, Blaine! We are so close to having our channel ready!

Here are some more observations, in case they are useful to anyone:
I did a lot of edits, moving resources between folders, deleting resources and deleting questions.
The browser gets slower as I do more edits, so I regularly have to refresh the page for it to regain speed.
After refreshing, I often notice that the number of resources inside a folder is no longer accurate, so I have started logging out and logging in again in order to see the right number of resources.
However, when I did that on Wednesday, most of my latest edits were gone (resources that i have moved or deleted were back). I let it rest for a day and after refreshing, some of my edits were back, but not all.
So it seems that I should give it plenty of time to process after I am done editing before logging out and back in.

Today, I am trying to finish my edits in Edge and it seems that it is faster to load Studio in Edge.
There was a Chrome update this week, so I am wondering if it might have impacted Kolibri?
Regardless, it still gets slower and slower as I do edits until the page eventually crashes, then gets faster after I refresh the page. However, the number of resources shown is not always right.

Looking forward to the future updates!

most of my latest edits were gone (resources that i have moved or deleted were back)

Unfortunately, this is a symptom of these edits conflicting with each other in a way that causes them to fail entirely on Kolibri Studio’s server side. This can happen when moving, copying, or deleting a large number of resources. Please retry them in batches of ~5 topics/folders or resources.

Regardless, it still gets slower and slower as I do edits until the page eventually crashes

We’re aware of this issue as well and we’re actively investigating it. Browsing and navigating large channels can increase memory usage in the browser, causing it to slowdown and crash.