Hello,

Please check your server error logs for 500 error details and let me know so that I can suggest.

If you are not sure about server error logs, you can enable app logs by changing the log_threshold to 1 in app/config/config.php and then try again to produce errors. Lastly check the latest log file in app/logs/ folder.

Thank you

ERROR - 2022-07-29 12:21:04 --> Severity: Warning --> Undefined property: Main::$shop_settings C:\xampp\htdocs\pos\app\core\MY_Shop_Controller.php 93 ERROR - 2022-07-29 12:21:04 --> Severity: Warning --> Attempt to read property “warehouse” on null C:\xampp\htdocs\pos\app\core\MY_Shop_Controller.php 93 ERROR - 2022-07-29 12:21:04 --> Could not find the language line “username” ERROR - 2022-07-29 12:21:04 --> Could not find the language line “password” ERROR - 2022-07-29 12:21:04 --> Could not find the language line “first_name” ERROR - 2022-07-29 12:21:04 --> Could not find the language line “last_name” ERROR - 2022-07-29 12:21:04 --> Could not find the language line “username” ERROR - 2022-07-29 12:21:04 --> Could not find the language line “email” ERROR - 2022-07-29 12:21:04 --> Could not find the language line “phone” ERROR - 2022-07-29 12:21:04 --> Could not find the language line “company” ERROR - 2022-07-29 12:21:04 --> Could not find the language line “gender” ERROR - 2022-07-29 12:21:04 --> Could not find the language line “password” ERROR - 2022-07-29 12:21:04 --> Could not find the language line “confirm_password” ERROR - 2022-07-29 12:21:04 --> Could not find the language line “first_name” ERROR - 2022-07-29 12:21:04 --> Could not find the language line “last_name” ERROR - 2022-07-29 12:21:04 --> Could not find the language line “username” ERROR - 2022-07-29 12:21:04 --> Could not find the language line “email” ERROR - 2022-07-29 12:21:04 --> Could not find the language line “phone” ERROR - 2022-07-29 12:21:04 --> Could not find the language line “company” ERROR - 2022-07-29 12:21:04 --> Could not find the language line “gender” ERROR - 2022-07-29 12:21:04 --> Could not find the language line “product_code” ERROR - 2022-07-29 12:21:04 --> Could not find the language line “product_name” ERROR - 2022-07-29 12:21:04 --> Could not find the language line “cname” ERROR - 2022-07-29 12:21:04 --> Could not find the language line “barcode_symbology” ERROR - 2022-07-29 12:21:04 --> Could not find the language line “product_unit” ERROR - 2022-07-29 12:21:04 --> Could not find the language line “product_price” ERROR - 2022-07-29 12:21:04 --> Could not find the language line “contact_person” ERROR - 2022-07-29 12:21:04 --> Could not find the language line “company” ERROR - 2022-07-29 12:21:04 --> Could not find the language line “email_address” ERROR - 2022-07-29 12:21:04 --> Could not find the language line “address” ERROR - 2022-07-29 12:21:04 --> Could not find the language line “city” ERROR - 2022-07-29 12:21:04 --> Could not find the language line “phone” ERROR - 2022-07-29 12:21:04 --> Could not find the language line “first_name” ERROR - 2022-07-29 12:21:04 --> Could not find the language line “last_name” ERROR - 2022-07-29 12:21:04 --> Could not find the language line “email” ERROR - 2022-07-29 12:21:04 --> Severity: Warning --> Undefined property: stdClass::$user_language C:\xampp\htdocs\pos\app\controllers\Main.php 16 ERROR - 2022-07-29 12:22:03 --> Severity: Warning --> Undefined array key “attr_name” C:\xampp\htdocs\pos\app\controllers\admin\Products.php 122 ERROR - 2022-07-29 12:22:03 --> Severity: error --> Exception: sizeof(): Argument #1 ($value) must be of type Countable|array, null given C:\xampp\htdocs\pos\app\controllers\admin\Products.php 122 ERROR - 2022-07-29 12:25:01 --> Severity: Warning --> Undefined array key “attr_name” C:\xampp\htdocs\pos\app\controllers\admin\Products.php 122 ERROR - 2022-07-29 12:25:01 --> Severity: error --> Exception: sizeof(): Argument #1 ($value) must be of type Countable|array, null given C:\xampp\htdocs\pos\app\controllers\admin\Products.php 122

Hello,

What version are you using? Can you try this on live demo and let me know the result.

Thank you