1. When adding JIRA macro, and trying to search for ticket, it returns "Received the following HTTP error code from the server: 200"


2. When adding a JIRA link, it gets converted to the JIRA macro, upon saving the updated page, the JIRA link is unable to display the details but instead displays the text: "java.io.IOException: Error on line 78: The entity name must immediately follow the '&' in the entity reference."

3. The following error is found in atlassian-confluence.log:
Caused by: java.io.IOException: Error on line 78: The entity name must immediately follow the '&' in the entity reference.
at com.atlassian.confluence.extra.jira.request.JiraChannelResponseHandler.getChannelElement(JiraChannelResponseHandler.java:48)
at com.atlassian.confluence.extra.jira.JiraIssuesManager$ByteStreamBasedSupplier.get(JiraIssuesManager.java:138)
4. Versions:
Confluence 7.6.2
Jira v8.8.0
5. The application links status both in JIRA and Confluence are "CONNECTED" with the outgoing and incoming connections set as "OAuth (impersonation)".
6. Same display is observed if using other user with the same permissions.