Fatal error: Uncaught EasyRdf\Http\Exception: HTTP request for SPARQL query failed in /var/www/html/vendor/sweetrdf/easyrdf/lib/Sparql/Client.php:274
Stack trace:
#0 /var/www/html/vendor/sweetrdf/easyrdf/lib/Sparql/Client.php(131): EasyRdf\Sparql\Client->request('query', 'SELECT ?superPr...')
#1 /var/www/html/model/sparql/GenericSparql.php(93): EasyRdf\Sparql\Client->query('SELECT ?superPr...')
#2 /var/www/html/model/sparql/GenericSparql.php(1570): GenericSparql->query('SELECT ?superPr...')
#3 /var/www/html/model/Concept.php(558): GenericSparql->querySuperProperties('http://www.w3.o...')
#4 /var/www/html/vendor/twig/twig/src/Extension/CoreExtension.php(1567): Concept->getProperties()
#5 /tmp/skosmos-template-cache/d6/d6ef8bf069a9bf8620e3fc8b11b6bee4.php(400): twig_get_attribute(Object(Twig\Environment), Object(Twig\Source), Object(Concept), 'properties', Array, 'any', false, false, false, 95)
#6 /var/www/html/vendor/twig/twig/src/Template.php(405): __TwigTemplate_4a133ec8170bb987cf81e047e03bcf0f->doDisplay(Array, Array)
#7 /var/www/html/vendor/twig/twig/src/Template.php(378): Twig\Template->displayWithErrorHandling(Array, Array)
#8 /tmp/skosmos-template-cache/86/8612c09fff2dd310f927229235d49bff.php(95): Twig\Template->display(Array)
#9 /var/www/html/vendor/twig/twig/src/Template.php(182): __TwigTemplate_323be7b059145f97e9c05e7e571201af->block_content(Array, Array)
#10 /tmp/skosmos-template-cache/3f/3f36534ee31cad2accf81ffaced5b933.php(864): Twig\Template->displayBlock('content', Array, Array)
#11 /var/www/html/vendor/twig/twig/src/Template.php(182): __TwigTemplate_e7920fbd86173539e3124b329713628a->block_error(Array, Array)
#12 /tmp/skosmos-template-cache/3f/3f36534ee31cad2accf81ffaced5b933.php(232): Twig\Template->displayBlock('error', Array, Array)
#13 /var/www/html/vendor/twig/twig/src/Template.php(405): __TwigTemplate_e7920fbd86173539e3124b329713628a->doDisplay(Array, Array)
#14 /var/www/html/vendor/twig/twig/src/Template.php(378): Twig\Template->displayWithErrorHandling(Array, Array)
#15 /tmp/skosmos-template-cache/86/8612c09fff2dd310f927229235d49bff.php(56): Twig\Template->display(Array, Array)
#16 /var/www/html/vendor/twig/twig/src/Template.php(405): __TwigTemplate_323be7b059145f97e9c05e7e571201af->doDisplay(Array, Array)
#17 /var/www/html/vendor/twig/twig/src/Template.php(378): Twig\Template->displayWithErrorHandling(Array, Array)
#18 /var/www/html/vendor/twig/twig/src/Template.php(390): Twig\Template->display(Array)
#19 /var/www/html/controller/WebController.php(192): Twig\Template->render(Array)
#20 /var/www/html/index.php(87): WebController->invokeVocabularyConcept(Object(Request))
#21 {main}
Next Twig\Error\RuntimeError: An exception has been thrown during the rendering of a template ("HTTP request for SPARQL query failed"). in /var/www/html/view/concept-shared.twig:95
Stack trace:
#0 /var/www/html/vendor/twig/twig/src/Template.php(378): Twig\Template->displayWithErrorHandling(Array, Array)
#1 /tmp/skosmos-template-cache/86/8612c09fff2dd310f927229235d49bff.php(95): Twig\Template->display(Array)
#2 /var/www/html/vendor/twig/twig/src/Template.php(182): __TwigTemplate_323be7b059145f97e9c05e7e571201af->block_content(Array, Array)
#3 /tmp/skosmos-template-cache/3f/3f36534ee31cad2accf81ffaced5b933.php(864): Twig\Template->displayBlock('content', Array, Array)
#4 /var/www/html/vendor/twig/twig/src/Template.php(182): __TwigTemplate_e7920fbd86173539e3124b329713628a->block_error(Array, Array)
#5 /tmp/skosmos-template-cache/3f/3f36534ee31cad2accf81ffaced5b933.php(232): Twig\Template->displayBlock('error', Array, Array)
#6 /var/www/html/vendor/twig/twig/src/Template.php(405): __TwigTemplate_e7920fbd86173539e3124b329713628a->doDisplay(Array, Array)
#7 /var/www/html/vendor/twig/twig/src/Template.php(378): Twig\Template->displayWithErrorHandling(Array, Array)
#8 /tmp/skosmos-template-cache/86/8612c09fff2dd310f927229235d49bff.php(56): Twig\Template->display(Array, Array)
#9 /var/www/html/vendor/twig/twig/src/Template.php(405): __TwigTemplate_323be7b059145f97e9c05e7e571201af->doDisplay(Array, Array)
#10 /var/www/html/vendor/twig/twig/src/Template.php(378): Twig\Template->displayWithErrorHandling(Array, Array)
#11 /var/www/html/vendor/twig/twig/src/Template.php(390): Twig\Template->display(Array)
#12 /var/www/html/controller/WebController.php(192): Twig\Template->render(Array)
#13 /var/www/html/index.php(87): WebController->invokeVocabularyConcept(Object(Request))
#14 {main}
thrown in /var/www/html/view/concept-shared.twig on line 95