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Solution:
Alright so I fixed the code the thing is I didn't bind all the parameters earlier and it kept giving me that error, so to fix it i did this:
$stmt->bind_param("isssssss", $Stud_num, $Name, $Faculty, $Lecturer, $Lecturer_Email, $R_Date, $R_Time, $Reason);
as you can see, the isssssss, accounts for every column and field thus inputting them inside the database.
Also changed the table name to Appointment_Details like many here mentioned, thank you very much.
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