Error undefined method `has_tags' or `id' for nil:NilClass during rails db:seed Question

When running rails db:seed I get some errors without any further explanation.

CloseReason: Created 0, skipped 5
User: Created 0, skipped 1
PostFlagType: Created 0, skipped 4
PostType: Created 0, skipped 5
ReactionType: Created 0, skipped 3
SiteSetting: Created 0, skipped 57
Got error undefined method `has_tags' for nil:NilClass. Continuing...
Ability: Created 0, skipped 7
PostHistoryType: Created 0, skipped 12
Got error undefined method `id' for nil:NilClass. Continuing...
WarningTemplate: Created 0, skipped 3
TagSet: Created 0, skipped 2
License: Created 0, skipped 5

Are they critical? Should I do something?

I tried to setup QPixel again and while I could avoid another error, this one persists. I gathered more information by adding to the rescue clause of db/seeds.rb

puts "#{e.class}: #{e.message}"
puts e.backtrace.join("\n")

and got

Post
Got error undefined method `has_tags' for nil:NilClass. Continuing...
NoMethodError: undefined method `has_tags' for nil:NilClass
/home/abanta/qpixel/app/models/post.rb:52:in `block in <class:Post>'
...
/home/abanta/qpixel/db/seeds.rb:56:in `block (2 levels) in <top (required)>'
/home/abanta/qpixel/db/seeds.rb:21:in `each'
/home/abanta/qpixel/db/seeds.rb:21:in `block in <top (required)>'
/home/abanta/qpixel/db/seeds.rb:11:in `each'
/home/abanta/qpixel/db/seeds.rb:11:in `<top (required)>'

Category
Got error undefined method `id' for nil:NilClass. Continuing...
NoMethodError: undefined method `id' for nil:NilClass
(erb):4:in `block in <top (required)>'
/usr/lib/ruby/2.7.0/erb.rb:905:in `eval'
/usr/lib/ruby/2.7.0/erb.rb:905:in `result'
/home/abanta/qpixel/db/seeds.rb:16:in `block in <top (required)>'
/home/abanta/qpixel/db/seeds.rb:11:in `each'
/home/abanta/qpixel/db/seeds.rb:11:in `<top (required)>'

In the database SELECT * FROM post_types delivers

+----+-----------+-------------+-------------+-----------+----------+------------+--------------+-------------+--------------------+--------------+--------------+--------------------+-----------+----------------+---------------+-----------------------------+
| id | name      | description | has_answers | has_votes | has_tags | has_parent | has_category | has_license | is_public_editable | is_closeable | is_top_level | is_freely_editable | icon_name | answer_type_id | has_reactions | has_only_specific_reactions |
+----+-----------+-------------+-------------+-----------+----------+------------+--------------+-------------+--------------------+--------------+--------------+--------------------+-----------+----------------+---------------+-----------------------------+
|  1 | Answer    | NULL        |           0 |         1 |        0 |          1 |            1 |           1 |                  1 |            0 |            0 |                  0 | NULL      |           NULL |             1 |                           0 |
|  2 | PolicyDoc | NULL        |           0 |         0 |        0 |          0 |            0 |           0 |                  0 |            0 |            0 |                  0 | NULL      |           NULL |             0 |                           0 |
|  3 | HelpDoc   | NULL        |           0 |         0 |        0 |          0 |            0 |           0 |                  0 |            0 |            0 |                  0 | NULL      |           NULL |             0 |                           0 |
|  4 | Article   | NULL        |           0 |         1 |        1 |          0 |            1 |           1 |                  1 |            0 |            1 |                  0 | NULL      |           NULL |             0 |                           0 |
+----+-----------+-------------+-------------+-----------+----------+------------+--------------+-------------+--------------------+--------------+--------------+--------------------+-----------+----------------+---------------+-----------------------------+

Maybe that helps finding the cause and judging the severity of the issue.

I found a issue on Github from August 21 that is related to seeding, but contains only little information at the moment.

posted over 2 years ago

CC BY-SA 4.0

2y ago

Trilarion‭

147 reputation 17 4 24 24