No tabs, nothing in Manage Display

Thanks, Thomas.

More detail: Before I installed flag_lists, I installed flag and created a flag called Research Folder.
After installing flag_lists, I added another flag from the included template.

With the first flag, I was able to display the Ajax link on nodes etc., and flag/unflag successfully.

After I added flag_lists, I wasn't seeing any Ajax link or tab on /user or link in the sidebar block or flag_list options in Manage Display for user or content types.

To see what would happen, I edited the configuration for the Research Folder flag and set it to be a flag lists flag--or at least that's what I though I was doing.

Flagged items using Research Folder then showed up in the sidebar block, but still no tab at /user or link in the block, or flag_list items in Manage Display for user/content types.

I decided to uninstall, reinstall and rebuild the flag_list flags and see if things are more clear to me.

Part of what's confusing in Flag module world is language. A "flag" might be an entity type ("bundle"?) or, in another context it might refer to the flag set on a node or user ("flaggings"?). And I was initially confused by "template," but understand now that it's a collection of parameters for a "flag" (in the first sense . . . I don't have a better idea for the language difficulties, but in the solution I'm trying to build, there will eventually be Folders, which are the "flags" users will select when marking a piece of content for collection. So flagged pieces of content will be collected in Folders (which are really "flags" that relate to "flaggings"... if I correctly understand what's actually happening.)

Reinstalled, followed steps at https://www.drupal.org/docs/contributed-modules/flag-lists/add-a-flag-li...

I named the new flag Research Folder - Content.

Results:

• I now see both "Flag list template 1" and "Research Folder - Content" in the Manage Display settings for the content types.
• Links for flagging do not appear on nodes in default view (verified enabled in settings)
• No tab appears in /user
• The My Flag List Items page and block appear but have no items (as expected).
• The My Flag List Items block doesn't have any link

Edit: I'm using an Adaptive2 subtheme but when I switch back to Bartik I have the same results (all caches flushed).

Detail that may be important: If I created a standard flag with Ajax link, it appears on nodes as expected. If I then edit that new flag and check the flag list template checkbox, it stops appearing where it did previously. I was going to uncheck it again and see what that would do, but after checking and saving the checkbox is disabled and can't be unchecked.

Flag version is 8.x-4.0-beta2

I removed all my flags before reinstalling flag_lists, but I didn't do an uninstall+reinstall of Flag. So that might be worth trying. I'm never 100% confident that nothing is left behind.

About 'naming,' I have some ideas, but will think on it some more then probably post them as a separate issue. To fully clear up the language, I think the maintainer(s) of Flag may need to get involved also. (It may actually make sense to open the issue there first.)

I did a complete uninstall of both flag and flag_lists, then reinstalled both.

I created a flag called "test" (per instructions)

I'll list parameter details below, but initial results: No tab in /user and no link in the sidebar block.

However, I discovered a stop I'd missed before: went to /flagging_collection using the navigation menu link and created a "flagging collection" using the "Template flag" called Test. The link for this flag does now appear on full node view of selected content types.

Config details:
At "Add flag" ...
Flag type: Content

At admin/structure/flags/manage for the flag...
Label: Test
Scope: Personal
Messages:
Flag link text: Add to test folder
Flag link description:
Flagged message: Successfully added
Unflag link text: Unflag this item
Unflag link description:
Unflagged message: Successfully removed
Flag access:
Unflag not allowed text: [none]
Expose additional permissions: [unchecked]
Flaggable types: a single content type called Resource
Display options:
Display link as field: checked
Display checkbox, Display in contextual links: unchecked
Display in entity links: only full content view mode checked
Link type: AJAX
Flagging collection template: Checkbox by "Flagging Collection Template"

When I go to admin/structure/flags now I get a WSOD "The website encounted an unexpected error. Please try again later.

Log shows error below. I've replaced part of my path with [..]

Error: Call to undefined method Drupal\user\Entity\User::getUsername() in Drupal\flag_lists\FlagListsFlagListBuilder->buildRow() (line 111 of [...]/web/modules/contrib/flag_lists/src/FlagListsFlagListBuilder.php)
#0 [...]/web/core/lib/Drupal/Core/Config/Entity/DraggableListBuilder.php(126): Drupal\flag_lists\FlagListsFlagListBuilder->buildRow()
#1 [internal function]: Drupal\Core\Config\Entity\DraggableListBuilder->buildForm()
#2 [...]/web/core/lib/Drupal/Core/Form/FormBuilder.php(532): call_user_func_array()
#3 [...]/web/core/lib/Drupal/Core/Form/FormBuilder.php(278): Drupal\Core\Form\FormBuilder->retrieveForm()
#4 [...]/web/core/lib/Drupal/Core/Form/FormBuilder.php(219): Drupal\Core\Form\FormBuilder->buildForm()
#5 [...]/web/core/lib/Drupal/Core/Config/Entity/DraggableListBuilder.php(94): Drupal\Core\Form\FormBuilder->getForm()
#6 [...]/web/core/lib/Drupal/Core/Entity/Controller/EntityListController.php(23): Drupal\Core\Config\Entity\DraggableListBuilder->render()
#7 [internal function]: Drupal\Core\Entity\Controller\EntityListController->listing()
#8 [...]/web/core/lib/Drupal/Core/EventSubscriber/EarlyRenderingControllerWrapperSubscriber.php(123): call_user_func_array()
#9 [...]/web/core/lib/Drupal/Core/Render/Renderer.php(578): Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber->Drupal\Core\EventSubscriber\{closure}()
#10 [...]/web/core/lib/Drupal/Core/EventSubscriber/EarlyRenderingControllerWrapperSubscriber.php(124): Drupal\Core\Render\Renderer->executeInRenderContext()
#11 [...]/web/core/lib/Drupal/Core/EventSubscriber/EarlyRenderingControllerWrapperSubscriber.php(97): Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber->wrapControllerExecutionInRenderContext()
#12 [...]/vendor/symfony/http-kernel/HttpKernel.php(158): Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber->Drupal\Core\EventSubscriber\{closure}()
#13 [...]/vendor/symfony/http-kernel/HttpKernel.php(80): Symfony\Component\HttpKernel\HttpKernel->handleRaw()
#14 [...]/web/core/lib/Drupal/Core/StackMiddleware/Session.php(57): Symfony\Component\HttpKernel\HttpKernel->handle()
#15 [...]/web/core/lib/Drupal/Core/StackMiddleware/KernelPreHandle.php(47): Drupal\Core\StackMiddleware\Session->handle()
#16 [...]/web/core/modules/page_cache/src/StackMiddleware/PageCache.php(106): Drupal\Core\StackMiddleware\KernelPreHandle->handle()
#17 [...]/web/core/modules/page_cache/src/StackMiddleware/PageCache.php(85): Drupal\page_cache\StackMiddleware\PageCache->pass()
#18 [...]/web/core/lib/Drupal/Core/StackMiddleware/ReverseProxyMiddleware.php(47): Drupal\page_cache\StackMiddleware\PageCache->handle()
#19 [...]/web/core/lib/Drupal/Core/StackMiddleware/NegotiationMiddleware.php(52): Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle()
#20 [...]/vendor/stack/builder/src/Stack/StackedHttpKernel.php(23): Drupal\Core\StackMiddleware\NegotiationMiddleware->handle()
#21 [...]/web/core/lib/Drupal/Core/DrupalKernel.php(717): Stack\StackedHttpKernel->handle()
#22 [...]/web/index.php(19): Drupal\Core\DrupalKernel->handle()
#23 {main}
.

If it helps, some other details:
Drupal 9.2.7
PHP 7.4.3
nginx 1.18.0
0.3.31-MariaDB-0ubuntu0.20.04.1 - Ubuntu 20.04

The patch took care of the error.
I'm still not seeing a tab in /user, but I've but a menu block there for the time being.

It appears I misread something and had the impression that there should be a tab on the /user page. I think I prefer a sidebar block anyway (Tools menu etc) so no issue there.

Probably all that's left is "Further, you should enable the link to create lists in the block's config." I'm not seeing where to do that.

Thanks. Know how to place blocks. The part I don't understand is "enable the link to create lists"... I haven't been able to find a link that enables lists.

This is at https://www.drupal.org/project/flag_lists at the moment... though it's under the D7 instructions.

• Enable the "list" block so that it is displayed on your content. The block will only be visible if the content is listable and the user has permission to create lists. That is, the node type must be assigned a template, or the block won't appear. Further, you should enable the link to create lists in the block's config.
• Create new lists using the link in the block.

I'm probably misunderstanding that, but I don't see anything like that to enable in the block config.

Understood. Thanks for the assist.