I tried writing my own copy of the skeleton module from https://github.com/sidharrell/D8HWexample.git modules/custom/hello_world, but I thought I'd start by changing the module name and using "ctf" instead of "hello" in the routes. I tried to install the module but I got an exception.
Route "ctf.content" does not exist
I deleted my module folder from beneath the custom folder and reloaded the page, but I still get this error. The site is now unusable.
Do I need to reinstall or is there an easy way to flush the cache or uninstall the module? I don't have drush installed (yet).