Backport PR
#6117: Remove / from route of TreeRedirectHandler....
Backport PR
#6117: Remove / from route of TreeRedirectHandler.
When base_url is set, navigating to http://{url}/{base_url} returns 404
This is due to the TreeRedirectHandler only picking up http://{url}/{base_url}/ and the TrailingSlashHandler being set to {base_url}/.*/.
This change will cause http://{url}/{base_url} to correctly redirect to http://{url}/{base_url}/tree, as expected.
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