Avamar: ERROR in client manager- "The request has invalid CSRF token" and "TypeError: Data is undefined"
Summary: Opening Avamar client manager reports the error: "The request has invalid CSRF token" and "TypeError: Data is undefined"
Symptoms
Scenario:
Tomcat is restarted.
The browser cache is cleared.
Log in to client manager and navigation to tab work/.
When trying to log out from client manager, the following error is seen.

Whenever client manager is reopened the login prompt does not appear, and the same error is seen.
The information about Avamar appears to have gone missing. In server summary, we see "no data found".
Below is the error seen in the ACMTrace log:
2022-07-06 15:44:43,340 WARN [ajp-nio-0:0:0:0:0:0:0:1-8509-exec-9]-common.NotificationAction: Notification to action invalidCSRF
022-07-06 15:44:43,342 ERROR [ajp-nio-0:0:0:0:0:0:0:1-8509-exec-9]-filters.AuthenticationFilter: The request has invalid CSRF token, rejecting the request 2022-07-06 15:44:43,633 WARN [ajp-nio-0:0:0:0:0:0:0:1-8509-exec-8]-common.NotificationAction: Notification to action invalidCSRF
2022-07-06 15:44:43,635 ERROR [ajp-nio-0:0:0:0:0:0:0:1-8509-exec-8]-filters.AuthenticationFilter: The request has invalid CSRF token, rejecting the request
2022-07-06 15:49:31,177 INFO [localhost-startStop-2]-listeners.ContextLauncher: Servlet Context Destroyed.
2022-07-06 15:49:34,384 INFO [localhost-startStop-2]-listeners.ContextLauncher: Servlet Context Destroyed.
2022-07-06 15:52:38,931 INFO [localhost-startStop-1]-listeners.ContextLauncher: Servlet Context Launched
Cause
Resolution
Chrome:
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Open Chrome Settings.
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Scroll to the bottom and click on Advanced.
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In the Privacy and Security section, click the Content Settings button.
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Click on Cookies.
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Next to Allow, click Add. Type [*.]avamarfqdn (example: *.avamarlab.com) and click "Add."
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Under All cookies and site data, search for avamar fqdn, and remove all avamarfqdn-related entries.
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Reload Chrome and log in to avamar client manager page.
Firefox:
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Go to Firefox's Preferences > Privacy and Security Menu.
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In the History section, select "Use custom settings for history" from the drop-down menu.
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Click on Exceptions and whitelist avamar FQDN (example test.avamar.com)
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Scroll down to Site Data and click on Settings next to it.
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Search for "avamar fqdn" and remove all shown entries.
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Reload Firefox and try to log in to avamar client manager page..