Malformed inline YAML string

[vietnogi]

Getting Malformed inline YAML string ('Enter desired Kontagent subdomain). for

de:
  kontagent_integration_request:
    ! 'Enter desired Kontagent subdomain: ':

en-US:
  /admin/curated_channels:
    ! 'Search channel:': 

however its valid on http://www.yamllint.com/

[vietnogi]

seems like the space at the eol of 'Enter desired Kontagent subdomain: ': is causing this error

[chocolateboy]

Same error for this, which is also valid according to that site and other YAML processors:

Input

foo: [
    'bar', {
        baz: 42
    }
]

Error

Malformed inline YAML string ([
'bar', {
baz: 42).