[FIX] output error when missing field set in pluginList sort control
Using the pluginList sort control block when you mistype or indicate an inexistent field the output is "No results for query." It doesn’t help to understand what is going on and give a wrong output.
There are results but the plugin is unable to sort them due to an error in the sort control block. Users should be able to see results and a remarks box should warn something is wrong with the field.
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Edited by Domeshow Emmanuel