Here is the error: Error Cannot connect to Harvest. Please check your credentials and make sure your server can communicate with the Harvest servers.
Yes, you'll need to fix that.
You're giving the connection an incorrect login, or JIRA can't reach the server because your network blocks it, or it's not running, or you have misconfigured whatever you have installed in order to make this connection.
We don't actually know what you are doing here. When you say "link JIRA to Harvest", what, exactly do you mean?
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