the request status is pending .

[ynxu]

Provisional headers are shown
Access-Control-Request-Headers: authorization,content-type
Access-Control-Request-Method: GET
Origin: http://localhost:4200
Referer: http://localhost:4200/admin/networks
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/67.0.3396.87 Safari/537.36