fix

app/controllers/application_controller.rb

@@ -24,6 +24,8 @@ class ApplicationController < ActionController::Base
   def load_block_copy_cookie
     block_id = cookies[Communication::Block::BLOCK_COPY_COOKIE]
     return if block_id.nil?
-    @block_copied = Communication::Block.find block_id
+    @block_copied = Communication::Block.where(university: current_university).find block_id
+  rescue
+    # If the block doesn't exist anymore
   end
 end