Laravel 5.5 layout.app not found

Help me to solve this issue. C:\xampp\htdocs\cm2\vendor\laravel\framework\src\Illuminate\View\FileViewFinder.php /** * Find the given view in the list of paths. * * @param string $name * @param array $paths * @return string * * @throws \InvalidArgumentException */ protected function findInPaths($name, $paths) { foreach ((array) $paths as $path) { foreach ($this->getPossibleViewFiles($name) as $file) { if ($this->files->exists($viewPath = $path.'/'.$file)) { return $viewPath; } } }

    throw new InvalidArgumentException("View [$name] not found.");
}

/**
 * Get an array of possible view files.
 *
 * @param  string  $name
 * @return array
 */
protected function getPossibleViewFiles($name)
{
    return array_map(function ($extension) use ($name) {
        return str_replace('.', '/', $name).'.'.$extension;
    }, $this->extensions);
}

/**
 * Add a location to the finder.
 *
 * @param  string  $location
 * @return void

Arguments "View [layouts.app] not found. (View: C:\xampp\htdocs\cm2\resources\views\welcome.blade.php)"