ISSUE-754: UnsupportedVersionException handling added when trying check is ACL enabled

kafka-ui-api/src/main/java/com/provectus/kafka/ui/service/ReactiveAdminClient.java

@@ -61,6 +61,7 @@ import org.apache.kafka.common.errors.GroupNotEmptyException;
 import org.apache.kafka.common.errors.InvalidRequestException;
 import org.apache.kafka.common.errors.SecurityDisabledException;
 import org.apache.kafka.common.errors.UnknownTopicOrPartitionException;
+import org.apache.kafka.common.errors.UnsupportedVersionException;
 import org.apache.kafka.common.requests.DescribeLogDirsResponse;
 import reactor.core.publisher.Flux;
 import reactor.core.publisher.Mono;
@@ -127,7 +128,9 @@ public class ReactiveAdminClient implements Closeable {
   private static Mono<Boolean> isAuthorizedSecurityEnabled(AdminClient ac, @Nullable Float kafkaVersion) {
     return toMono(ac.describeAcls(AclBindingFilter.ANY).values())
         .thenReturn(true)
-        .doOnError(th -> !(th instanceof SecurityDisabledException) && !(th instanceof InvalidRequestException),
+        .doOnError(th -> !(th instanceof SecurityDisabledException)
+                && !(th instanceof InvalidRequestException)
+                && !(th instanceof UnsupportedVersionException),
             th -> log.warn("Error checking if security enabled", th))
         .onErrorReturn(false);
   }