diff --git a/quic/core/quic_session.cc b/quic/core/quic_session.cc
index 2332070..763d208 100644
--- a/quic/core/quic_session.cc
+++ b/quic/core/quic_session.cc
@@ -1489,7 +1489,8 @@
   if (stream == nullptr) {
     // This causes the connection to be closed because of failed to serialize
     // packet.
-    QUIC_BUG << "Stream " << id << " does not exist when trying to write data.";
+    QUIC_BUG << "Stream " << id << " does not exist when trying to write data."
+             << " version:" << connection_->transport_version();
     return STREAM_MISSING;
   }
   if (stream->WriteStreamData(offset, data_length, writer)) {