All my collections are missing

[sagoskog]

Hi, from one day to another all my collections in Lightroom is gone.

Any one that know whats happened?

Mac OS Catalina 10.15.7
Lightroom Classic version: 10.0

[AxelMatt]

Do you have checked that you opened the right catalog?

BTW:

So people don't have to download the image you have attached to your post please Edit your post to remove the attached screen shot and include it in the body of the text of your post.

You do that by Clicking the "More..." link at the bottom of your post, Selecting "Edit Message" and then use the "Insert Photos" icon in the tool bar at the top of the Post/Reply/Edit dialog box like this.

[sagoskog]

Yes ofcourse, what a strange thing to ask. 
but mabye good for newbies. Im not 😉 

They just dissapeared. I've done no updates or anything.

[sagoskog]

I guess I clock on "...More" to edit my post. But this button isnt work unfortunately, just look like this: Blue with a empty bubble underneeth.

[DdeGannes]

Your screen capture.

[GoldingD]

Create a new collection, close then reopen LrC.

Some have noted that fixes the issue. 

[johnrellis · Accepted solution]

Your screenshot indicates you've tripped over this bug, which Adobe has acknowledged:

https://feedback.photoshop.com/conversations/lightroom-classic/lightroom-classic-collections-panel-s... 

Please add your constructive opinion to the bug report, and be sure to click Like and Follow at the bottom of the first post. That will make it a little more likely that Adobe will prioritize a fix, and you'll be notified when the bug's status changes.

The bug report has two easy workarounds.

[Use the blue reply button under the first post to ensure replies sort properly.]

[sagoskog]

Thanks! It solved the problem!