Swagger Installation in Laravel Project

Required @OA\PathItem() not found

at vendor\zircote\swagger-php\src\Loggers\DefaultLogger.php:31
27▕ } else {
28▕ $error_level = E_USER_WARNING;
29▕ }
30▕
➜ 31▕ trigger_error($message, $error_level);
32▕ }
33▕ } -- I am getting this code error everytime , Can you please suggest

Thanks

L5_SWAGGER_CONST_HOST
why are we using this ??

Please can you tell me your extension, it's IDE is very good