Rails 5 is ignoring view templates - ruby-on-rails

Question

In my Rails project, I ran:
rails generate scaffold car
which successfully created all of the necessary files and directories for the application. This includes the standard application.html.erb layout file, as well as the app/views/cars directory that includes more standard html.erb files (index, show, ETC.)
In addition, my cars route is in place in config/routes.rb.
My next command is rails server, which is also successful.
When I open my browser and go to localhost:3000, the welcome page for ruby on rails pops up as normal. I'm expecting that when I go to localhost:3000/cars, I'll see the html rendered from app/views/cars/index.html.erb. If not, I at least expect that it will default to application.html.erb.
Instead, I am repeatedly receiving the following:
>ActionController::UnknownFormat in CarsController#index
>CarsController#index is missing a template for this request format and variant. request.formats: ["text/html"] request.variant: []
My controller class looks like this:
class CarsController < ApplicationController
before_action :set_car, only: [:show, :edit, :update, :destroy]
# GET /cars
# GET /cars.json
def index
#cars = Car.all
end
# GET /cars/1
# GET /cars/1.json
def show
end
# GET /cars/new
def new
#car = Car.new
end
# GET /cars/1/edit
def edit
end
# POST /cars
# POST /cars.json
def create
#car = Car.new(car_params)
respond_to do |format|
if #car.save
format.html { redirect_to #car, notice: 'Car was successfully created.' }
format.json { render :show, status: :created, location: #car }
else
format.html { render :new }
format.json { render json: #car.errors, status: :unprocessable_entity }
end
end
end
# PATCH/PUT /cars/1
# PATCH/PUT /cars/1.json
def update
respond_to do |format|
if #car.update(car_params)
format.html { redirect_to #car, notice: 'Car was successfully updated.' }
format.json { render :show, status: :ok, location: #car }
else
format.html { render :edit }
format.json { render json: #car.errors, status: :unprocessable_entity }
end
end
end
# DELETE /cars/1
# DELETE /cars/1.json
def destroy
#car.destroy
respond_to do |format|
format.html { redirect_to cars_url, notice: 'Car was successfully destroyed.' }
format.json { head :no_content }
end
end
private
# Use callbacks to share common setup or constraints between actions.
def set_car
#car = Car.find(params[:id])
end
# Never trust parameters from the scary internet, only allow the white list through.
def car_params
params.fetch(:car, {})
end
end
I'd greatly appreciate any insight into this issue. I've followed every bit of advice I've seen on the internet regarding layouts, controllers, and views, and I'm having no luck.
Thanks in advance!

Answer 1

Thanks to everyone who was trying to answer my question! It was a stumper, but I've discovered the problem:
After uninstalling and reinstalling rails a few times, I created a dummy rails project and generated a new scaffold "car." Upon running rails server and loading up localhost:3000/cars, the default layout was rendered as normal. Thinking that reinstalling rails had solved it, I then linked the dummy project to a remote github repository.
At this point, running rails server and loading localhost:3000/cars showed me the same error message as before. This made me believe that something about the remote repo was messing up my project, so I googled around for this error message and github.
I stumbled upon the following link which ultimately answered my question:
https://github.com/rails/rails/issues/18660
Turns out, one of the directories in my root path was capitalized, and that was throwing rails off right away. As soon as I renamed the capitalized directory to all lowercase, the app ran flawlessly.
I'm frustrated by ruby on rails' extremely opinionated conventions, and especially since this project is almost a week late due to such an esoteric mistake. But I'm over the moon to have it running smoothly now and I hope this may help someone else in the future.
Thanks again all!