Project management system - hard rejected

Hello,

a few days ago, I uploaded my first item on CodeCanyon. I hoped that it will be accepted, as I did a lot of work there. The code was clean, well documented. Then a email arrived.

Unfortunately your submission Workflow - Project Management System isn't ready for CodeCanyon and cannot be resubmitted as it did not meet our minimum requirements for quality and/or Envato Market policies. In order for submissions to be considered for sale they must be of high aesthetic and technical quality, unique to our library and cannot be in violation of Envato's policies. 

Regrettably the Help and Quality Teams are unable to offer a critique or feedback on your rejected submission. 

Please see our Help Center for more information: https://help.market.envato.com/hc/en-us/articles/204067134 

Our Review team also provided these comments:

  - Please make sure the code adheres to PSR standards.

- Make sure that the code doesn't raise any PHP errors, notices or warnings. Please set error_reporting(E_ALL)

- Please double check for common security vulnerabilities: SQL injection, XSS, CSRF etc

- Please make sure the item doesn't contain any encrypted code.

Our software doesn’t contain any of encrypted core, we were testing the software for about 2 weeks and didn’t notice any of PHP errors or code vulnerabilities. Can somebody tell me what to look for ?

Hello
Same here
I had submitted the invoice with stock, expense & income management system.
I had got soft rejection and i had also got the same comments as yours. Even the lines were same. Now i am making some changes in my script then i will resubmit.