Ignore RECORD-messages sent by APISM which do not have JSON format.

UpdatePTUDevCtrl/ismas/ismas_client.cpp

@@ -342,8 +342,11 @@ IsmasClient::sendRequestReceiveResponse(int port, QString const &request) {
                 return std::nullopt;
             }
         } else {
+            if (!response.contains("RECORD")) {
+                // maybe APISM does not send valid JSON: "RECORD SAVED" etc.
                 printDebugMessage(port, clientIP, clientPort,
                     QString("PARSE ERROR ") + response + " " + parseError.errorString());
+            }
             ::close(sockfd);
             return std::nullopt;
         }