change

app/jobs/sync_mirrored_repository_job.rb

@@ -6,6 +6,6 @@ class SyncMirroredRepositoryJob < ApplicationJob
     current_user = User.find_by(id: user_id)
     return if repo.blank? || current_user.blank?
     result = Gitea::Repository::SyncMirroredService.new(repo.user.login, repo.identifier, token: current_user.gitea_token).call
-    repo&.mirror.set_status! if result[:status] === 200
+    repo&.mirror&.set_status! if result[:status] === 200
   end
 end