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https://issues.apache.org/jira/browse/SOLR-12003?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Cassandra Targett resolved SOLR-12003.
--------------------------------------
       Resolution: Fixed
    Fix Version/s: master (8.0)
                   7.3

This has been fixed with these commits which were linked to SOLR-11648:

master: https://git-wip-us.apache.org/repos/asf?p=lucene-solr.git;h=7d9783d
branch_7x: https://git-wip-us.apache.org/repos/asf?p=lucene-solr.git;h=ef62f4f
branch_7_3: https://git-wip-us.apache.org/repos/asf?p=lucene-solr.git;h=3e8f539

> Suggestions UI fails with a single core
> ---------------------------------------
>
>                 Key: SOLR-12003
>                 URL: https://issues.apache.org/jira/browse/SOLR-12003
>             Project: Solr
>          Issue Type: Bug
>      Security Level: Public(Default Security Level. Issues are Public) 
>          Components: Admin UI, AutoScaling
>            Reporter: Cassandra Targett
>            Priority: Major
>             Fix For: 7.3, master (8.0)
>
>         Attachments: suggestions-single-core-error.gif
>
>
> From a build of master from today (15 Feb 2018), the new Suggestions UI 
> doesn't work well with a single core (meaning, Solr in standalone mode). It 
> shows a cryptic error that doesn't tell the user what's wrong.
> * The screen should be hidden if it's not supported in standalone mode.
> * In the left menu, the Suggestions item in the list is not highlighted 
> properly to show that's the screen you are on. Whatever screen you were on 
> when you clicked "Suggestions" is highlighted.
> * The only error shown to the user is a red bar with "no core retrieved for 
> null", which doesn't explain what's going on.
> * Errors are logged and shown in the Logging UI, but it repeats the same "no 
> core retrieved for null" - nothing explains that it's not supported for 
> standalone mode (I only happen to know that).
> I've attached a short .gif of the user experience with this - it's rather 
> poor.



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