LocalSettings.php should only contain one `smwgNamespaceIndex` definition and the declaration should happen before `enableSemantics`.

Issue

Semantic MediaWiki issues the following error message:1

LocalSettings.php should only contain one `smwgNamespaceIndex` definition and the declaration
should happen before `enableSemantics`.

This issue appears if configuration parameter $smwgNamespaceIndexSets the index of the first namespace to be used by Semantic MediaWiki was declared after invoking Semantic MediaWiki with the enableSemantics() function.

Solution

The issue can be mitigated recifying your wiki's configuration in the "LocalSettings.php" file:

// should be placed directly above the "enableSemantics()" call and only once
$smwgNamespaceIndex = '672';
enableSemantics( 'example.org' );