SelfHost - Settings tab returning error: Sorry, the page you are looking for cou

I just installed it and when I clic setting tab it returns the following error: Sorry, the page you are looking for could not be found.

I also see the console was showing this:
/home/localhost/domains/ninja.example.com/public_html/ninja/vendor/laravel/framework/src/Illuminate/Routing/RouteCollection.php#179
return $this->getRouteForMethods($request, $others);
}

    throw new NotFoundHttpException;
}

/** 

but not sure what it means

I’m not sure, are there any related errors in the web server error log?

It looks to be working fine, I dont know what I received that error.