I am using the APP_URL environment variable to set the API URL in Swagger documentation in Laravel. However, the problem is that the URL is displayed as {{ env('APP_URL') }}/v4/ on the documentation page instead of showing the actual URL.

I have entered the following codes in the main controller file of Laravel:

/**
 * @OAServer(
 *      url="{{ env('APP_URL') }}/v4/",
 *      description="API server"
 *  )
 */