Unable to insert data into mysql but no error message shown - php

Question

Was trying to make a student register page but the data won't insert into database and there was no error message shown so i'm not sure where the problem is. Any help is appreciated!
Here's the code:
<form onsubmit="return Add_Validate()" class="form-horizontal" action="AddStudent.php" method="POST">
<div class="modal-header">
<button type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">×</span></button>
<h4 class="modal-title"><i class="fa fa-plus"></i> Add Student</h4>
</div>
<div class="modal-body">
<div class="form-group">
<label class="col-sm-3 control-label">Student Name </label>
<label class="col-sm-1 control-label">: </label>
<div class="col-sm-8">
<input type="text" class="form-control" id="Add_Student_Name" placeholder="Student Name" name="Student_Name1" autocomplete="off" required>
</div>
</div>
<div class="form-group">
<label class="col-sm-3 control-label">Gender </label>
<label class="col-sm-1 control-label">: </label>
<div class="col-sm-8">
<select class="form-control" id="Add_Student_Gender" name="Student_Gender1" required>
<option value="">~~SELECT~~</option>
<option value="Male">Male</option>
<option value="Female">Female</option>
</select>
</div></div>
<div class="form-group">
<label class="col-sm-3 control-label">Address </label>
<label class="col-sm-1 control-label">: </label>
<div class="col-sm-8">
<input type="text" class="form-control" id="Add_Student_Address" placeholder="Address" name="Student_Address1" autocomplete="off" required>
</div>
</div>
<div class="form-group">
<label class="col-sm-3 control-label">Contact Number </label>
<label class="col-sm-1 control-label">: </label>
<div class="col-sm-8">
<input type="text" class="form-control" id="Add_Contact_Number" placeholder="Contact Number" name="Contact_Number1" autocomplete="off" required>
</div>
</div>
<div class="form-group">
<label class="col-sm-3 control-label">Email </label>
<label class="col-sm-1 control-label">: </label>
<div class="col-sm-8">
<input type="text" class="form-control" id="Add_Student_Email" placeholder="Email" name="Student_Email1" autocomplete="off" required>
</div>
</div>
<div class="form-group">
<label class="col-sm-3 control-label">Faculty </label>
<label class="col-sm-1 control-label">: </label>
<div class="col-sm-8">
<select class="form-control" name="Add_Faculty1" id="FacultyName" required>
<option value="">~~SELECT~~</option>
<?php $query_faculty="SELECT FacultyName FROM `faculty`";
$result_faculty = mysqli_query($connect, $query_faculty) or die(mysqli_error($connect));
while($row_faculty=mysqli_fetch_array($result_faculty)) { ?>
<option value="<?php echo $row_faculty['FacultyName'] ?>"><?php echo $row_faculty['FacultyName'] ?></option>
<?php } ?></select></div></div>
<div class="form-group">
<label class="col-sm-3 control-label">Username </label>
<label class="col-sm-1 control-label">: </label>
<div class="col-sm-8">
<input type="text" class="form-control" id="Add_Student_Username" placeholder="Username" name="Student_Username1" autocomplete="off" required>
</div></div>
<div class="form-group">
<label class="col-sm-3 control-label">Password </label>
<label class="col-sm-1 control-label">: </label>
<div class="col-sm-8">
<input type="password" class="form-control" id="Add_Password" placeholder="Password" name="Student_Password1" autocomplete="off" required>
</div>
</div>
And SQL command:
<?php require 'php_action/db_connect.php';
if($_POST) {
$Student_Name= $_POST['Student_Name1'];
$Student_Gender= $_POST['Student_Gender1'];
$Student_Address= $_POST['Student_Address1'];
$Contact_Number= $_POST['Contact_Number1'];
$Student_Email= $_POST['Student_Email1'];
$FacultyName= $_POST['Add_Faculty1'];
$Student_Username= $_POST['Student_Username1'];
$Password= $_POST['Student_Password1'];
$sql = "INSERT INTO student (Student_Name,Student_Gender,Student_Address,Contact_Number,Student_Email,FacultyName,Student_Username,Password) VALUES ('$Student_Name', '$Student_Gender','$Student_Address','$Contact_Number','$Student_Email','$FacultyName','$Student_Username','$Password')";
if($connect->query($sql) === TRUE) {
echo "<SCRIPT>alert('Student successfully added!');document.location='Student_Register.php'</SCRIPT>";
}
else {
echo "<SCRIPT>alert('Student add unsuccessful!');document.location='Student_Register.php'</SCRIPT>";
}
}
$connect->close();
?>

Answer 1

Found the error, seems to be wrong column name, sorry the all the trouble.....
Admin please close my question.

Answer 2

You're not getting an error message because you never get the error message from MySQL and show it in your alert. $connect->error will contain the error message, and you can add that to your alert like this:
else {
echo "<SCRIPT>alert('Student add unsuccessful! Reason: ' + " . json_encode($connect->error) . ");document.location='Student_Register.php'</SCRIPT>";
}