videoaggregator: log an ERROR if we're going to return a flow error
diff --git a/gst-libs/gst/video/gstvideoaggregator.c b/gst-libs/gst/video/gstvideoaggregator.c
index 5a9dfc9..383beb3 100644
--- a/gst-libs/gst/video/gstvideoaggregator.c
+++ b/gst-libs/gst/video/gstvideoaggregator.c
@@ -1110,7 +1110,7 @@
       start_time = GST_BUFFER_TIMESTAMP (buf);
       if (start_time == -1) {
         gst_buffer_unref (buf);
-        GST_DEBUG_OBJECT (pad, "Need timestamped buffers!");
+        GST_ERROR_OBJECT (pad, "Need timestamped buffers!");
         GST_OBJECT_UNLOCK (vagg);
         return GST_FLOW_ERROR;
       }