Expected label name, got "INVALID"

i have deployed a prometheus server A to federate from another prometheus server B.
config file like below:

  • job_name: ‘get_cadvisor’
    scrape_interval: 300s
    scrape_timeout: 300s
    honor_labels: true
    metrics_path: ‘/federate’
    params:
    ‘match’:
    - ‘{job=“cadvisor”}’
    static_configs:
    • targets:
      • ‘x.x.x.x:xxxx’

but i found the error – “expected label name, got “INVALID”” in the prometheus targets . how can i slove the problems ?

the config file just like this:
image