Installation script not working with 3+ fatal errors

[zyf722]

Tried both on fresh WSL2 Ubuntu 18.04, 20.04 and also Github Actions workflow.

1.Doorkeeper::MissingConfiguration ✔️

Doorkeeper::MissingConfiguration: Configuration for doorkeeper missing. Do you have doorkeeper initializer?

Location: Step 4: decidim.
My Solution: Mannually create an initializer file (Link).

2.Webpacker configuration file not found ✔️

Webpacker configuration file not found config/webpacker.yml.
Make sure webpacker:install is run successfully before running dependent tasks.

Location: one step between Step 4: decidim and Step 6: create
(apologies for unable to give the precise location, for my console output history was cleared)
My Solution: Execute bundle exec rails webpacker:install in the decidim folder.

3.ERROR: relation "decidim_system_admins" does not exist ❌

PG::UndefinedTable: ERROR: relation "decidim_system_admins" does not exist (ActiveRecord::StatementInvalid)
Location: Step 6: create, line 570 & 574 of the script.
My Solution: N/A at present.

[pixelpax]

Same, rails 7.0.4, feels critical.