Try older Sonar version

Author: keilw

pom.xml

@@ -368,7 +368,7 @@
                  <plugin>
         			<groupId>org.sonarsource.scanner.maven</groupId>
         			<artifactId>sonar-maven-plugin</artifactId>
-        			<version>5.5.0.6356</version>
+        			<version>5.1.0.4751</version>
       			</plugin>
       			<!-- Source: https://mvnrepository.com/artifact/org.sonarsource.scanner.maven/sonar-maven-plugin -->
             </plugins>