Update warning message

TiMESPLiNTER · TiMESPLiNTER · commit 748189d6fb9c · 2019-09-25T11:23:09.000+02:00
diff --git a/pkg/rdkafka/RdKafkaProducer.php b/pkg/rdkafka/RdKafkaProducer.php
@@ -50,7 +50,8 @@ public function send(Destination $destination, Message $message): void
             if (version_compare(RdKafkaContext::getLibrdKafkaVersion(), '1.0.0', '>=')
                 && version_compare(phpversion('rdkafka'), '3.1.0', '<=')) {
                 trigger_error(
-                    'Phprdkafka <= 3.1.0 is incompatible with librdkafka 1.0.0 when calling `producev`',
+                    'Phprdkafka <= 3.1.0 is incompatible with librdkafka 1.0.0 when calling `producev`. ' .
+                    'Falling back to `produce` (without message headers) instead.',
                     E_USER_WARNING
                 );
             } else {
