A PHP Error was encountered

Severity: Notice

Message: Trying to get property of non-object

Filename: controllers/article.php

Line Number: 131

A PHP Error was encountered

Severity: Notice

Message: Trying to get property of non-object

Filename: controllers/article.php

Line Number: 133

A PHP Error was encountered

Severity: Notice

Message: Trying to get property of non-object

Filename: controllers/article.php

Line Number: 134

Database Error

A Database Error Occurred

Error Number: 1064

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1

select * from app_category where category_id =