added log details

common/transport/mqtt/src/main/java/org/thingsboard/server/transport/mqtt/session/GatewaySessionHandler.java

@@ -176,7 +176,8 @@ public class GatewaySessionHandler {
                                     TransportProtos.PostTelemetryMsg postTelemetryMsg = JsonConverter.convertToTelemetryProto(deviceEntry.getValue().getAsJsonArray());
                                     transportService.process(deviceCtx.getSessionInfo(), postTelemetryMsg, getPubAckCallback(channel, deviceName, msgId, postTelemetryMsg));
                                 } catch (Throwable e) {
-                                    log.warn("Failed to post telemetry.", e);
+                                    UUID gatewayId = new UUID(gateway.getDeviceIdMSB(), gateway.getDeviceIdLSB());
+                                    log.warn("[{}][{}] Failed to convert telemetry: {}", gatewayId, deviceName, deviceEntry.getValue(), e);
                                 }
                             }
 
@@ -208,7 +209,6 @@ public class GatewaySessionHandler {
                                 TransportProtos.PostAttributeMsg postAttributeMsg = JsonConverter.convertToAttributesProto(deviceEntry.getValue().getAsJsonObject());
                                 transportService.process(deviceCtx.getSessionInfo(), postAttributeMsg, getPubAckCallback(channel, deviceName, msgId, postAttributeMsg));
                             }
-
                             @Override
                             public void onFailure(Throwable t) {
                                 log.debug("[{}] Failed to process device attributes command: {}", sessionId, deviceName, t);