fail on error message

examples/read_card.py

@@ -103,7 +103,7 @@ class CardReader:
                     self.serPort = port[0]
                     break
             if not self.serPort:
-                self.returnMsg = f"device with name starts with: {SER_PORT_NAME} not found"
+                self.returnMsg = f"Elatec device not found - check port product or manufacturer"
                 self.returnCode = ERROR_READER_INIT
                 return
         self.serCon = SerialConnection(self.serPort)