サブディレクトリでlaravelプロジェクトを運用する場合、
以下のようなエラー

Internal Server Error
The server encountered an internal error or misconfiguration and was unable to complete your request.

Please contact the server administrator at devel@vue.jp to inform them of the time this error occurred, and the actions you performed just before this error.

More information about this error may be available in the server error log.

対応方法

以下追加

prj_dir/public/.htaccess

RewriteBase /ｐｒｊ_dir