5.x installation issue / NoMethodError: undefined method `mirror_assets' for nil:NilClass

[whotopia]

I keep getting this error?

I, [2023-09-17T10:29:18.616338 #184304]  INFO -- : Migrating to ActsAsTaggableMigration (20201116145429)
== 20201116145429 ActsAsTaggableMigration: migrating ==========================
-- create_table("additional_tags")
   -> 0.0379s
-- create_table("additional_taggings")
   -> 0.0810s
== 20201116145429 ActsAsTaggableMigration: migrated (0.1194s) =================

I, [2023-09-17T10:29:18.807397 #184304]  INFO -- : Migrating to MigrateExistingTags (20201123093214)
== 20201123093214 MigrateExistingTags: migrating ==============================
-- table_exists?("tags")
   -> 0.0008s
== 20201123093214 MigrateExistingTags: migrated (0.0019s) =====================

rake aborted!
NoMethodError: undefined method `mirror_assets' for nil:NilClass
/home/rm-zam/redmica-stable-2.3/lib/redmine/plugin_loader.rb:142:in `mirror_assets'
/home/rm-zam/redmica-stable-2.3/lib/tasks/redmine.rake:164:in `block (3 levels) in <top (required)>'
/home/rm-zam/redmica-stable-2.3/lib/tasks/redmine.rake:74:in `block (2 levels) in <top (required)>'