Errors generated while running AT to Dexterity migration

When I run the Dexterity migration, I see several different types of error messages:

2021-11-21 22:25:54,558 ERROR   [Zope.ZCatalog:407][waitress-2] uncatalogObject unsuccessfully attempted to uncatalog an object with a uid of /Main/FLL/Resources/2012_MIGRATION_. 
2021-11-21 22:25:54,559 ERROR   [Zope.ZCatalog:407][waitress-2] uncatalogObject unsuccessfully attempted to uncatalog an object with a uid of /Main/FLL/Participate_MIGRATION_. 
2021-11-21 22:25:54,559 ERROR   [Zope.ZCatalog:407][waitress-2] uncatalogObject unsuccessfully attempted to uncatalog an object with a uid of /Main/Members/mscout_MIGRATION_. 
2021-11-21 22:25:54,559 ERROR   [Zope.ZCatalog:407][waitress-2] uncatalogObject unsuccessfully attempted to uncatalog an object with a uid of /Main/Members/Travis_MIGRATION_. 
2021-11-21 22:25:54,560 ERROR   [Zope.ZCatalog:407][waitress-2] uncatalogObject unsuccessfully attempted to uncatalog an object with a uid of /Main/Members/disilver_MIGRATION_. 
2021-11-21 22:25:54,560 ERROR   [Zope.ZCatalog:407][waitress-2] uncatalogObject unsuccessfully attempted to uncatalog an object with a uid of /Main/FLL/competitions_MIGRATION_.
2021-11-21 22:27:20,776 INFO    [plone.app.contenttypes.migration.browser:190][waitress-2] Start migrating 18 objects from ATNewsItem to News Item
2021-11-21 22:27:20,788 INFO    [GenericSetup.types:100][waitress-2] 'News Item' type info imported.
2021-11-21 22:27:20,790 INFO    [plone.app.contenttypes.migration.migration:95][waitress-2] Migrating News Item /Main/Archive/FLLSignups
2021-11-21 22:27:22,031 INFO    [plone.app.contenttypes.migration.migration:95][waitress-2] Migrating News Item /Main/Archive/NorCalFLL
2021-11-21 22:27:22,683 INFO    [plone.app.contenttypes.migration.migration:95][waitress-2] Migrating News Item /Main/Archive/BotballToNationals2005
2021-11-21 22:27:22,874 ERROR   [ATCT.migration:284][waitress-2] Couldn't access RID -1180209161
2021-11-21 22:27:22,875 ERROR   [ATCT.migration:284][waitress-2] Couldn't access RID -1180209160
2021-11-21 22:27:22,875 ERROR   [ATCT.migration:284][waitress-2] Couldn't access RID -1180208976
2021-11-21 22:27:22,876 ERROR   [ATCT.migration:284][waitress-2] Couldn't access RID -1180208915
2021-11-21 22:27:22,876 ERROR   [ATCT.migration:284][waitress-2] Couldn't access RID -1180208738
2021-11-21 22:27:22,877 INFO    [plone.app.contenttypes.migration.migration:95][waitress-2] Migrating News Item /Main/FLL/News/20110821News
2021-11-21 22:27:23,073 INFO    [plone.app.contenttypes.migration.migration:95][waitress-2] Migrating News Item /Main/FLL/News/Los Altos Robotics FLL Scrimmage Announcement
2021-11-21 22:27:25,091 INFO    [plone.app.contenttypes.migration.browser:190][waitress-2] Start migrating 207 objects from ATDocument to Document
2021-11-21 22:27:25,097 INFO    [GenericSetup.types:100][waitress-2] 'Document' type info imported.
2021-11-21 22:27:25,100 INFO    [plone.app.contenttypes.migration.migration:95][waitress-2] Migrating Document /Main/Archive/NCaFLL-LAR-results
2021-11-21 22:27:25,363 INFO    [plone.app.contenttypes.migration.migration:95][waitress-2] Migrating Document /Main/Archive/Welcome2010
2021-11-21 22:27:25,661 INFO    [plone.app.contenttypes.migration.migration:95][waitress-2] Migrating Document /Main/FLL/copy_of_index_html
2021-11-21 22:27:26,072 ERROR   [ATCT.migration:284][waitress-2] Couldn't access RID -1180209380
2021-11-21 22:27:26,073 ERROR   [ATCT.migration:284][waitress-2] Couldn't access RID -1180209375
2021-11-21 22:27:26,074 ERROR   [ATCT.migration:284][waitress-2] Couldn't access RID -1180209366
2021-11-21 22:27:26,077 ERROR   [ATCT.migration:284][waitress-2] Couldn't access RID -1180209357
2021-11-21 22:27:26,078 ERROR   [ATCT.migration:284][waitress-2] Couldn't access RID -1180209356
2021-11-21 22:27:26,079 ERROR   [ATCT.migration:284][waitress-2] Couldn't access RID -1180209350
2021-11-21 22:27:26,079 ERROR   [ATCT.migration:284][waitress-2] Couldn't access RID -1180209342
2021-11-21 22:27:26,080 ERROR   [ATCT.migration:284][waitress-2] Couldn't access RID -1180209331
2021-11-21 22:27:26,081 ERROR   [ATCT.migration:284][waitress-2] Couldn't access RID -1180209327
2021-11-21 22:31:26,642 INFO    [plone.app.contenttypes.migration.browser:206][waitress-2] Finished migrating 207 objects from ATDocument to Document in 0:04:01
2021-11-21 22:31:26,681 INFO    [plone.app.contenttypes.migration.browser:190][waitress-2] Start migrating 2 objects from ATTopic to Collection
2021-11-21 22:31:26,747 INFO    [plone.app.contenttypes.migration.topics:493][waitress-2] Migrating Topic at /Main/news
2021-11-21 22:31:26,781 INFO    [plone.app.contenttypes.migration.topics:493][waitress-2] Migrating Topic at /Main/events
2021-11-21 22:31:26,802 ERROR   [Zope.ZCatalog:407][waitress-2] uncatalogObject unsuccessfully attempted to uncatalog an object with a uid of /Main/events/previous. 
2021-11-21 22:31:26,825 INFO    [plone.app.contenttypes.migration.browser:206][waitress-2] Finished migrating 2 objects from ATTopic to Collection in 0:00:00
2021-11-21 22:31:26,837 INFO    [plone.app.contenttypes.migration.browser:190][waitress-2] Start migrating 39 objects from ATBlob to Image
2021-11-21 22:31:26,845 INFO    [GenericSetup.types:100][waitress-2] 'Image' type info imported.
2021-11-21 22:31:26,847 INFO    [plone.app.contenttypes.migration.migration:95][waitress-2] Migrating Image /Main/img/FoodFactorLogo.jpg
2021-11-21 22:31:26,921 INFO    [plone.app.contenttypes.migration.field_migrators:95][waitress-2] Migrating image FoodFactorLogo.jpg
2021-11-21 22:31:26,929 INFO    [plone.app.contenttypes.migration.migration:95][waitress-2] Migrating Image /Main/Botball/BotballFundRaisingFlier.jpg
2021-11-21 22:31:27,016 INFO    [plone.app.contenttypes.migration.field_migrators:95][waitress-2] Migrating image 
2021-11-21 22:31:27,024 INFO    [plone.app.contenttypes.migration.migration:95][waitress-2] Migrating Image /Main/FLL/Resources/Images/EV3 Robot
2021-11-21 22:31:27,123 INFO    [plone.app.contenttypes.migration.field_migrators:95][waitress-2] Migrating image 15810959302_516e5bbaf8_m.jpg
2021-11-21 22:31:27,132 INFO    [plone.app.contenttypes.migration.migration:95][waitress-2] Migrating Image /Main/FLL/Resources/Images/Tournament2014
2021-11-21 22:31:27,210 INFO    [plone.app.contenttypes.migration.field_migrators:95][waitress-2] Migrating image 15624609900_bd81d85cc1_m.jpg
2021-11-21 22:31:27,220 ERROR   [ATCT.migration:284][waitress-2] Couldn't access RID -1180209365
2021-11-21 22:31:27,220 ERROR   [ATCT.migration:284][waitress-2] Couldn't access RID -1180209337
2021-11-21 22:31:27,220 ERROR   [ATCT.migration:284][waitress-2] Couldn't access RID -1180209303
2021-11-21 22:31:27,221 ERROR   [ATCT.migration:284][waitress-2] Couldn't access RID -1180209168
2021-11-21 22:31:27,222 ERROR   [ATCT.migration:284][waitress-2] Couldn't access RID -1180209155
2021-11-21 22:31:27,222 ERROR   [ATCT.migration:284][waitress-2] Couldn't access RID -1180209079
2021-11-21 22:31:27,222 ERROR   [ATCT.migration:284][waitress-2] Couldn't access RID -1180209014
2021-11-21 22:31:27,223 ERROR   [ATCT.migration:284][waitress-2] Couldn't access RID -1180208900
2021-11-21 22:31:27,223 INFO    [plone.app.contenttypes.migration.migration:95][waitress-2] Migrating Image /Main/img/2010 Scrimmage

and

2021-11-21 22:34:25,316 INFO    [plone.app.contenttypes.migration.browser:265][waitress-2] The following types were not migrated: 
 Image
Collection
Link
File

The final report looks encouraging.

Migration finished in: 0:09:55
-----------------------------
Migration statictics:
{'BlobFile': {'amount_migrated': 323,
              'old_meta_type': 'ATBlob',
              'type_name': 'File'},
 'BlobImage': {'amount_migrated': 39,
               'old_meta_type': 'ATBlob',
               'type_name': 'Image'},
 'Document': {'amount_migrated': 207,
              'old_meta_type': 'ATDocument',
              'type_name': 'Document'},
 'Event': {'amount_migrated': 46,
           'old_meta_type': 'ATEvent',
           'type_name': 'Event'},
 'Folder': {'amount_migrated': 95,
            'old_meta_type': 'ATFolder',
            'type_name': 'Folder'},
 'News Item': {'amount_migrated': 18,
               'old_meta_type': 'ATNewsItem',
               'type_name': 'News Item'},
 'Topic': {'amount_migrated': 2,
           'old_meta_type': 'ATTopic',
           'type_name': 'Collection'}}
-----------------------------
State before:
{'Document (ATDocument)': 128,
 'Event (ATEvent)': 46,
 'File (ATBlob)': 323,
 'Folder (ATBTreeFolder)': 1,
 'Folder (ATFolder)': 95,
 'Image (ATBlob)': 31,
 'News Item (ATNewsItem)': 13,
 'Topic (ATTopic)': 2}
-----------------------------
Stats after:
{'Collection (Dexterity Item)': 2,
 'Document (Dexterity Item)': 128,
 'Event (Dexterity Item)': 46,
 'File (Dexterity Item)': 323,
 'Folder (ATBTreeFolder)': 1,
 'Folder (Dexterity Container)': 95,
 'Image (Dexterity Item)': 31,
 'News Item (Dexterity Item)': 13}
-----------------------------

Do I need to do something about the ERROR messages or is the site fine as it is?

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