Fix server error when failing to follow back followers from `/relationships` (#23787)

2 files changed, 8 insertions, 0 deletions

diff --git a/app/controllers/relationships_controller.rb b/app/controllers/relationships_controller.rb
index baa34da22..de5dc5879 100644
--- a/app/controllers/relationships_controller.rb
+++ b/app/controllers/relationships_controller.rb
@@ -19,6 +19,8 @@ class RelationshipsController < ApplicationController
     @form.save
   rescue ActionController::ParameterMissing
     # Do nothing
+  rescue Mastodon::NotPermittedError, ActiveRecord::RecordNotFound
+    flash[:alert] = I18n.t('relationships.follow_failure') if action_from_button == 'follow'
   ensure
     redirect_to relationships_path(filter_params)
   end
diff --git a/app/models/form/account_batch.rb b/app/models/form/account_batch.rb
index 5a7fc7ed1..6a05f8163 100644
--- a/app/models/form/account_batch.rb
+++ b/app/models/form/account_batch.rb
@@ -35,9 +35,15 @@ class Form::AccountBatch
   private
 
   def follow!
+    error = nil
+
     accounts.each do |target_account|
       FollowService.new.call(current_account, target_account)
+    rescue Mastodon::NotPermittedError, ActiveRecord::RecordNotFound => e
+      error ||= e
     end
+
+    raise error if error.present?
   end
 
   def unfollow!