Login failed - how to troubleshoot

I tried making new accounts and logging in but I get a "Login failed" error. Here is account .yaml file:

state: enabled
email: g[email protected]
fullname: Gobs
language: en
content_editor: default
twofa_enabled: false
avatar: {  }
access:
  site:
    login: true

I removed the password hash in the hope that that would somehow fix things by asking me to reset my password but no such luck