I am trying to enable Cloud Messaging API (Legacy) in firebase console, because I need the server key for building my flutter apps. but when I try try to enable it, by clicking Manage API in Google Cloud Console, the result is:
There was an error while loading /apis/library/googlecloudmessaging.googleapis.com?authuser=1&project=xxxxxx. Please try again.
It may be a browser or network issue. Go to the loading issues help page to troubleshoot the issue.
is there a way to enable Cloud Messaging API (Legacy)