Error from Techaedu

Base-URL: https://techaedu.techasoft.com/

Remote-IP: 3.23.94.64

Type: NOTICE ERROR [8] : Undefined offset: 0

Code: 8

Message: Undefined offset: 0

Filename: /home/techasoft/techaedu_test/techaedu_web/application/controllers/Welcome.php

Line Number: 1504

Backtrace:

File: /home/techasoft/techaedu_test/techaedu_web/application/controllers/Welcome.php
Line: 1504
Function: errorHandler

File: /home/techasoft/techaedu_test/techaedu_web/system/core/CodeIgniter.php
Line: 532
Function: course_service

File: /home/techasoft/techaedu_test/techaedu_web/index.php
Line: 315
Function: require_once

----------- HEADERS START ----------------

----------- HEADERS END ----------------
----------- API AND PARAMS START ---------------
_get User not logged in

----------- API AND PARAMS END ---------------Something Went Wrong Please Try Again Later