修复

app/helpers/repositories_helper.rb

@@ -200,8 +200,7 @@ module RepositoriesHelper
 
   def repo_git_submodule_url(owner, repo, path)
     unless (path.starts_with?('http://') || path.starts_with?('https://'))
-      path = File.expand_path(path, "#{base_url}/#{owner&.login}/#{repo&.identifier}")
-      path = path.split("#{Rails.root}/")[1]
+      path = File.expand_path(path, "/#{owner&.login}/#{repo&.identifier}")
     end
 
     return path