Fatal Error:Maximum execution time of 120 seconds is exceeded - php

Question

Error:
https://i.stack.imgur.com/ZZQkW.jpg
Fatal Error:Maximum execution time of 120 seconds is exceeded
The page loads very slowly.
The goal was to insert data and file to the table. But something does not let it. I will use my code as an example in this case.
So the user types their data here:
<?php
require_once $_SERVER["DOCUMENT_ROOT"] . "/tonevre/data_inc/functions.php";
use tonevre\general;
use tonevre\VideoUpload;
if(isset($_POST["addVideo"])) {
$videoUpload = new VideoUpload;
$response = $videoUpload->addVideo();
}
?>
<label>Name your video!</label>
<ul>
<input type="text" name="title" placeholder="Title" required>
<label>Description</label>
<input type="text" name="descrip" placeholder="Tell the viewers about your video" required>
<label>Upload your file</label>
<input type="file" name="image" required>
<button type="submit" name="addVideo">UPLOAD</button>
This data goes here (addVideo is a method from the class VideoUpload):
public function addVideo(){
#This will insert the data to the table called vidup
ini_set('max_execution_time', 0);
$title = $_POST["title"] ? $_POST["title"] : "";
$descrip = $_POST["descrip"] ? $_POST["descrip"] : "";
$image = $_FILES["image"]["name"] ? $_FILES["image"]["name"] : "";
$sql = "INSERT INTO vidup (title, descrip, image) VALUES (?, ?, ?)";
$paramType = "sss";
$paramValue = array(
":title" => $title,
":descrip" => $descrip,
":image" => $image
);
$this->ds->prepare($sql, $paramType, $paramValue);
$this->ds->execute($sql, $paramType, $paramValue);
// if the title is empty echo the error message
if(empty($title)) {
$response["status"] = "error";
$response["message"] = "Please enter a title";
return $response;
}
if(empty($paramValue)) {
$response["status"] = "error";
$response["message"] = "There is a problem";
return $response;
}
I will also mention this, for more details:
public function prepare($query, $paramType, $paramArray)
{
$stmt = $this->conn->prepare($query);
$this->bindQueryParams($stmt, $paramType, $paramArray);
$stmt->execute();
return $stmt;
header("location: ../header.php");
}
public function bindQueryParams($stmt, $paramType, $paramArray = array())
{
ini_set('memory_limit', '-1');
$paramValueReference[] = &$paramType;
for ($i = 0; $i < count($paramArray); $i++) {
$paramValueReference[] = &$paramArray[$i];
}
call_user_func_array(array(
$stmt,
'bind_param'
), $paramValueReference);
}
I couldn't find any solid enough explanation for the cause. A good explanation would help me and others in the future. Thank you.