INSERT INTO `IOT`.`busstop` (`timestamp`,`temp`, `ax`, `ay`, `az`, `bx`, `by`, `bz`, `activity0`, `activity1`, `activity2`, `activity3`, `activity4`) VALUES ( CURRENT_TIMESTAMP, , , , , , , , ,,,,);Could not enter data: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ' , , , , , , ,,,,)' at line 1