patched flag_list https://www.drupal.org/project/flag_lists/issues/3230729, patch 4

composer.json

@@ -235,7 +235,7 @@
               "Term Reference Tree: Re-implement Track List https://www.drupal.org/project/term_reference_tree/issues/3064280": "https://www.drupal.org/files/issues/2021-07-16/3064280_bring_back_tracklist-15.patch"
             },
             "drupal/flag_lists": {
-              "Call to a member function id() on null in flag_lists_flag_action_access https://www.drupal.org/project/flag_lists/issues/3230729": "./patches/hook_flag_access_id_on_null_3.patch"
+              "Call to a member function id() on null in flag_lists_flag_action_access https://www.drupal.org/project/flag_lists/issues/3230729": "./patches/hook_flag_access_id_on_null_4.patch"
             }
         },
         "drupal-scaffold": {

patches/hook_flag_access_id_on_null_4.patch

@@ -0,0 +1,49 @@
+diff --git a/flag_lists.module b/flag_lists.module
+index cd81104..8a83435 100644
+--- a/flag_lists.module
++++ b/flag_lists.module
+@@ -240,23 +240,29 @@ function flag_lists_flag_action_access($action, FlagInterface $flag, AccountInte
+   $flagListsService = Drupal::service('flaglists');
+   $flagLists = $flagListsService->getAllFlaggingCollections();
+   foreach ($flagLists as $flagList) {
+-    if ($flag->id() == $flagList->getRelatedFlag()->id()) {
+-      if ($flagList->getBaseFlag()->isGlobal()) {
+-        // The flag list is global.
+-        return AccessResult::allowedIfHasPermission($account,
+-          'access global flag lists');
+-      }
+-      elseif ($flagList->getOwnerId() == $account->id()) {
+-        // The flag list is owned by current user.
+-        return AccessResult::allowedIfHasPermission($account,
+-          'view own flag lists');
+-      }
+-      else {
+-        // The user is allowed to see all flag lists.
+-        return AccessResult::allowedIfHasPermission($account,
+-          'view flag lists');
++    if ($flagList->getRelatedFlag()) {
++      if ($flag->id() == $flagList->getRelatedFlag()->id()) {
++        if ($flagList->getBaseFlag()->isGlobal()) {
++          // The flag list is global.
++          return AccessResult::allowedIfHasPermission($account,
++            'access global flag lists');
++        }
++        elseif ($flagList->getOwnerId() == $account->id()) {
++          // The flag list is owned by current user.
++          return AccessResult::allowedIfHasPermission($account,
++            'view own flag lists');
++        }
++        else {
++          // The user is allowed to see all flag lists.
++          return AccessResult::allowedIfHasPermission($account,
++            'view flag lists');
++        }
+       }
++    } else {
++      $logger = \Drupal::logger('flag_lists');
++      $logger->error('flagging_collection ' . $flagList->getName() . ' (' . $flagList->id() . ')' . ' owned by user id ' . $flagList->getOwner()->id() . ' doesn\'t have related flag');
+     }
++    
+   }
+ 
+   // Check for access for the used template as well.