Http integration and php

First of all I apologize for my English
I am on a LoRaWan project which consists of recovering data from a sensor and displaying it on a website
In the first place I installed chirpstcak and I review the data
I integrated the http and I created a “lora” database
For the code PHP it is


header("Content-type: application/json");
$json = file_get_contents("php://input");

$obj = json_decode($json);

$decoded = base64_decode(json_encode($obj->data));

$server 	= "localhost";	
$username 	= "root";			
$password 	= "";				
$DB 		= "lora";			

$conn = new mysqli($server, $username, $password,$DB);
if ($conn->connect_error) 
    die("Connection failed: " . $conn->connect_error); 

$insert = "INSERT INTO loratable(value) VALUES ('$decoded')";



I get no data and when I view the index.php. There is this error displayed

Can you help me because I don’t know where is the error.
Thank you

This topic was automatically closed 90 days after the last reply. New replies are no longer allowed.