CHW-4920 APIKeyInvalidFilter

invalid key_type filter; expected 'personal' or 'agent'

Default message: invalid key_type filter; expected ‘personal’ or ‘agent’
HTTP status: 400 (client)

Problem. The ?key_type= query parameter supplied a value that is neither personal nor agent. Cause. Typo or unknown enum value. Fix. Drop the filter, or supply one of the documented values. HTTP 400.