Merge branch 'ent-3296-Descarga-informe-CSV-con-Graficas-no-funcionan' into 'develop'

Fixed bug in export to csv report

See merge request artica/pandorafms!2135

Former-commit-id: 04d0af4a61212057c7e539fc4513e2b45a2bc31a

pandora_console/include/functions_reporting.php

@@ -6547,7 +6547,7 @@ function reporting_simple_graph($report, $content, $type = 'dinamic',
 				$content['id_agent_module'],
 				$content['period'],
 				$report["datetime"]);
-
+			$return['chart'] = array();
 			foreach ($data as $d) {
 				$return['chart'][$d['utimestamp']] = $d['data'];
 			}