Error (500)

Message: Call to a member function isPrimary() on null
File: /var/www/Lumi/seo-sitemap/application/includes/SitemapTreeBuilder.php
Line: 289
URL: beta.jagerbetekent.nl/sitemap/
User Agent: Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)
line 218 $sitemapTreeBuilder->findEntry('author')
line 190 $sitemapTreeBuilder->loadRecords('author')
line 61 $sitemapTreeBuilder->isPublished('author', '31')
line 31 $sitemapTreeBuilder->getTree()
$sitemapController->index()
line 199 $sitemapController->call_user_func_array(Array, Array)
line 56 $controller->invoke('index', Array)
line 600 $controller->invoke('index', Array)
line 467 $framework->buildController('/var/www/Lumi/seo-sitemap/application/controllers/SitemapController.php', 'Lumi\SEO\Sitemap\Controllers\SitemapController', 'sitemap-index-', 'seo-sitemap\sitemap', 'index', Array, Array, 0, null)
line 349 $framework->createController('sitemap', 'index', Array, Array, 0)
line 119 $framework->startApplication()
line 868 $framework->__construct()
line 3 $framework->require('/var/www/Lumi/core/application/includes/Framework.php')
line 3 $framework->require('/var/www/Lumi/Framework.php')