[BUGFIX] Remove duplicate urls while importing from RealUrl

Classes/Domain/Service/RealUrlImportService.php

@@ -194,20 +194,20 @@ class RealUrlImportService implements SingletonInterface {
 			return;
 		}
 
+		$importedUrls = [];
 		foreach ($records as $record) {
-			if (!$this->checkEncodedUrlCacheEntry($record)) {
-				continue;
-			}
-
 			$url = trim($record['content']);
-			if ($url !== '') {
-				/** @var $contentComparisonTest ContentComparisonTest */
-				$contentComparisonTest = $this->objectManager->get(ContentComparisonTest::class);
-				$url = $this->prepareUrl($url);
-				$contentComparisonTest->setCompareUrl($url);
-				$contentComparisonTest->setTestUrl($url);
-				$this->contentComparisonTestRepository->add($contentComparisonTest);
+			if (isset($importedUrls[$url]) || !$this->checkEncodedUrlCacheEntry($record) || $url === '') {
+				continue;
 			}
+			$importedUrls[$url] = 1;
+
+			/** @var $contentComparisonTest ContentComparisonTest */
+			$contentComparisonTest = $this->objectManager->get(ContentComparisonTest::class);
+			$url = $this->prepareUrl($url);
+			$contentComparisonTest->setCompareUrl($url);
+			$contentComparisonTest->setTestUrl($url);
+			$this->contentComparisonTestRepository->add($contentComparisonTest);
 		}
 	}