Warning: mysqli_query(): Empty query on the  lines

if ($result).

<?php

 $jid = $_REQUEST['JID'];
 $CLx = $_REQUEST['CL'];
 $CL = str_replace("'", "'", $CLx);
 $ADx = $_REQUEST['AD'];
 $AD = str_replace("'", "'", $ADx);
 // etc etc


 $dbConnection = mysqli_connect ('10.169.999.999', 'boiw', 'Tx', 'bw1_pp');

 mysqli_autocommit($dbConnection, false);

 $flag =true;

  $squery1 = "INSERT INTO `awg` (`JID`,`CL`,`AD`,`DT`,`SS1`,`SS2`,`SS3`,`SVFN`,`CS) VALUES ($jid,$CL,$AD,$DT,$SS1,$SS2,$SS3,$SVFN,$CS)";
  $squery2 = "INSERT INTO `cae` (`JID`,`CL`,`AD`,`DT`,`SS1`,`SS2`,`SS3`,`SVFN`) VALUES ($jid,$CL,$AD,$DT,$SS1,$SS2,$SS3,$SVFN)";
  $squery3 = "INSERT INTO `calc` (`JID`,`CL`,`AD`,`DT`,`SS1`,`SS2`,`SS3`,`SVFN`) VALUES ($jid,$CL,$AD,$DT,$SS1,$SS2,$SS3,$SVFN)";
  $squery4 = "INSERT INTO `costings` (`JID`,`CL`,`AD`,`DT`,`SS1`,`SS2`,`SS3`,`SVFN`) VALUES ($jid,$CL,$AD,$DT,$SS1,$SS2,$SS3,$SVFN,$CS)";
  $squery5 = "INSERT INTO `hazzard` (`JID`,`CL`,`AD`,`DT`,`SS1`,`SVFN`,`CS`) VALUES ($jid,$CL,$AD,$DT,$SS1,$SVFN,$CS)";
  $squery6 = "INSERT INTO `spay` (`JID`,`CL`,`AD`,`DT`,`SS1`,`SS2`,`SS3`,`SVFN`,`surveyor`) VALUES ($jid,$CL,$AD,$DT,$SS1,$SS2,$SS3,$SVFN,$SV)";
  $squery7 = "INSERT INTO `spix` (`JID`,`CL`,`AD`,`DT`,`SS1`,`SVFN`,) VALUES ($jid,$CL,$AD,$DT,$SS1,$SVFN)";
  // I have tried stating the values as $X, '$X',....no difference
  $result = mysqli_query($dbConnection, $query1);

  if (!$result) {
  $flag = false;
  echo "Error details: " . mysqli_error($dbConnection) . ".";
  }

  $result = mysqli_query($dbConnection, $query2);

  if (!$result) {
  $flag = false;
  echo "Error details: " . mysqli_error($dbConnection) . ".";
  }

  $result = mysqli_query($dbConnection, $query3);  // and so on

  if (!$result) {
  $flag = false;
  echo "Error details: " . mysqli_error($dbConnection) . ".";
  }

  if ($flag) {
  mysqli_commit($dbConnection);
  echo "All queries were executed successfully";
  } else {
  mysqli_rollback($dbConnection);
  echo "All queries were rolled back";
  }

  mysqli_close($dbConnection);

  ?>