Steps to reproduce:

1. Run kfl init and set up your Keyflare instance. This will create a BASE URL and USER KEY in ~/.config/keyflare
2. Delete the worker and d1 db in Cloudflare
3. Try to run kfl projects create myproject

Result:

kfl projects create myproject
✗ Unexpected token '<', "<!DOCTYPE "... is not valid JSON

Expected Result:

• Show a nicer - corresponding error if the CF Worker is not accessible (network error or possibly deleted instance?)
• Ensure that a nicer error is also shown when there is no BASE URL or USER KEY defined at all on the client.