Hi Team,
Since a couple of days, confluence is malfunctioning. It is showing different error every time when we try to edit and save a page. It also is not allowing creating pages in a few spaces.
"Unable to communicate with the server. Saving is not possible at the moment"
"The editor didn't load this time - The connection timed out. If it happens again, speak to your Confluence admin. You may be using a proxy server that prevents WebSocket connections"
"Something went wrong after loading the editor. Copy your unsaved changes and refresh the page to keep editing."
I have copied a few errors we found in our logs.
ff:fe44:8272%eth0, 10.41.104.98] and local port 5801
2020-02-06 10:15:42,610 INFO [Catalina-utility-1] [confluence.cluster.hazelcast.HazelcastClusterManager] startCluster Starting the cluster.
2020-02-06 10:15:55,231 WARN [Catalina-utility-1] [hazelcast.aws.utility.RetryUtils] log Couldn't connect to the AWS service, [1] retrying in 1 seconds...
Any help is greatly appreciated! 
Please note that we recently upgraded both Confluence & JIRA on a suggestion from Atlassian Support Team member in a previous ticket.